---
product_id: 1296128
title: "303 Marine Fabric Guard for Boat Covers & Canvas, 1 Gallon"
brand: "303 products"
price: "€ 284.16"
currency: EUR
in_stock: true
reviews_count: 13
category: "303 Products"
url: https://www.desertcart.hr/products/1296128-303-marine-fabric-guard-for-boat-covers-and-canvas-1
store_origin: HR
region: Croatia
---

# Restores water repellency Double UV sunscreen shield 3-year lasting protection 303 Marine Fabric Guard for Boat Covers & Canvas, 1 Gallon

**Brand:** 303 products
**Price:** € 284.16
**Availability:** ✅ In Stock

## Summary

> 🛥️ Keep your marine fabrics flawless—because your boat deserves VIP treatment!

## Quick Answers

- **What is this?** 303 Marine Fabric Guard for Boat Covers & Canvas, 1 Gallon by 303 products
- **How much does it cost?** € 284.16 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/1296128-303-marine-fabric-guard-for-boat-covers-and-canvas-1)

## Best For

- 303 products enthusiasts

## Why This Product

- Trusted 303 products brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by the Pros:** Recommended by Sunbrella, the gold standard in marine fabrics—join the elite who demand only the best for their gear.
- • **Long-Lasting Defense:** Protect your investment with up to 3 years of durable fabric guard—because your boat cover deserves more than a quick fix.
- • **Sun-Proof Your Style:** Double UV sunscreen technology shields fabrics from harsh sun damage, keeping colors vibrant and fresh season after season.
- • **Eco-Smart & Fragrance-Free:** Low odor and safe for all fabrics, this marine fabric guard lets you protect your gear without compromising comfort or environment.
- • **Effortless Stain & Grease Repellent:** Say goodbye to stubborn stains and grease with a formula designed to repel dirt and spills before they set in.

## Overview

303 Marine Fabric Guard is a professional-grade, fragrance-free liquid treatment that restores water and stain repellency to boat covers, canvas, and marine fabrics. Featuring double UV sunscreen protection and lasting up to 3 years, it repels grease, dirt, and stains while being recommended by Sunbrella. Ideal for maintaining vibrant, durable fabrics in demanding marine environments.

## Description

desertcart.com: 303 Marine Fabric Guard for Boat Covers & Canvas, 1 Gallon | Restores water and stain resistance on boat covers, canvas, and marine fabrics. : Clothing, Shoes & Jewelry

Review: Great product. - This works really great one bottle was pretty for my little boat cover and even brought some color back to cover. Was streak free and no greasiness to it at all.
Review: LIFE SAVER for white slipcovers! - We have the Ikea Ektorp sectional with White slipcovers in the sunroom at our airbnb/vrbo vacation rental. We have 2 covers so things can be swapped/cleaned as needed but since IKEA no longer makes 100% cotton slipcovers & the new ones can’t be bleached I wanted to protect our old version for as long as possible. Its sunroom location is directly off the pool area which means its heavily used and requires CONSTANT stain treatment & washing. This is life and we’re happy people enjoy are enjoying their vacation but it does get exhausting pre-treating & removing stains every 4-7 days. A lot of the issues seemed to come from wet bathing suits, suntan oils, and drink spills so I figured waterproofing might prevent wet suit color transfer & allow guests time to clean up spills before they soak in. So far this has done an AMAZING job at prolonging the time between washings!! I haven't noticed any change to the fabrics color, feel, or durability after using this religiously. A few of the cushions did develop some yellow areas that bleach hasn’t taken out but I don't know if that's a result of using this for over a year or if it was caused by a guest. —TIPS / STEPS— These are steps I’ve found work best for our use. 1. Transfer product into HEAVY DUTY spray bottle (such as those found at Home Depot) •Low-quality sprayers deteriorate after 1st use 2. Launder Items 1-2 days prior to treatment: •Treat stains w/ shout •Use as LITTLE un-scented detergent possible •2nd Wash: Just Borax & Vinegar •2 Rinse Cycles •Dryer *The manufacturers online info is very specific about the product only working if there’s NO residual product leftover in fabric. Yes...it's exhausting, but its made a HUGE difference in how well this works compared to just applying after normal wash/dry. 3. Lay down clean cotton drop-cloth in driveway & place clean items on top. 4. Put on gloves & a respirator/mask if sensitive to fumes. Also make sure no animals or children are nearby while spraying. *See bottom for further info about why this is important* 5. Spray 1st side thoroughly. •Paying special attention to the edges & piping since these areas collect dirt & color quickest. 6. Allow items to dry in sun for remaineder of the afternoon 7. After they’ve fully dried I place them in a sterile bag & put it in the garage overnight. 8. The next morning I Repeat steps 3-6 for the opposite side. •It’s entirely possible to do both sides in a single day...but I’ve found the chemical off-gassing lingers FAR LESS TIME if each side is sprayed & allowed to sun-bake for at least 5 hours before treating the opposite side. **GLOVES, MASK & NO ANIMAL / CHILDREN** Yes, there’s a very strong chemical smell that lasts 8+ hours. This is due to the ‘odorless mineral spirits’ content which is used as a carrier to help the waterproofing to penetrate into the fabric fibers. However unlike the name implies, OMS is far from odorless. So, PLEASE BE SURE to use this: •Outdoors in a well ventilated area •Away from all Animals & Children •Plenty of daylight time to allow for the mineral spirits to evaporate/off-gas. ➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖ For the sunroom we also use a Dash & Albert indoor/outdoor rug on top of the large jute rug, this has been a lifesaver and worth its weight in gold when trying to keep a rental spotless! It allows spills to be easily cleaned or even bleached out when necessary. We’ve spot treated between guests & removed to fully bleach during spring cleaning...both options are quick and easy with any stains coming right up. *Since posting the original review above I’ve also started using this on the rentals drop-cloth cabana style curtains on the outdoor pergola. Although we don’t see a lot of rainfall here in San Diego....the overnight condensation and random rainstorms meant they would only last 4-5 months before mildew & mold could no longer be bleached out and they needed replaced. After putting 4 new ones up I sprayed front/back to see if it might slow mildew. It worked well initially but after about 2 months it seemed to accelerate the issue since the new curtains were heavily spotted with mildew while the old bleached ones weren’t. This may be due to my quick spray rather than following the guidelines I use for the slipcovers. The drop cloths are heavily bleached before making the curtains so this residue + treatment might have made a bad combo. I plan to try again while following the slipcover steps to see if it works better, will update my review if so.

## Features

- Lasts up to 3 years
- Repels grease, dirt, and stains
- Double UV sunscreen
- Restores water repellency
- Recommended by and for Sunbrella

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0000AY1W7 |
| Best Sellers Rank | #12,410 in Health & Household ( See Top 100 in Health & Household ) #11 in Household Fabric Upholstery Cleaners |
| Brand | 303 Products |
| Brand Name | 303 Products |
| Capacity | 128 fluid ounces |
| Container Type | Bucket |
| Customer Reviews | 4.5 out of 5 stars 5,397 Reviews |
| Global Trade Identification Number | 00082043006706 |
| Included Components | 303 Marine Fabric Guard - 1 gal (30674) |
| Item Form | Liquid |
| Item Type Name | 303 Marine Fabric Guard - Restores Water and Stain Repellency To Factory New Levels, Simple and Easy To Use, Manufacturer Recommended, Safe For All Fabrics, 1 Gallon (30674) |
| Item Volume | 128 fluid ounces |
| Item Weight | 6.7 pounds |
| Manufacturer | Gold Eagle Co. |
| Material Feature | Fragrance Free |
| Material Features | Fragrance Free |
| Model Number | 30674 |
| Number of Items | 1 |
| Part Number | 30674 |
| Product Benefits | Low Odor |
| Scent | Unscented |
| Size | 128 Fl Oz (Pack of 1) |
| Special Features | DIRECTIONS – Use product outdoors only, in supplied packaging. Spray product onto fabric until evenly wet, overlapping areas in a crisscross pattern, and let dry. Do not oversaturate. Treated material must be protected from rain/dew until completely cured. Cure Time: 12 – 24 hours dependent on temperature. If these steps are performed correctly, the material will be water repellent at this point. … |
| Special Ingredients | Low Odor |
| Specific Uses For Product | Furniture |
| Surface Recommendation | Fabric |
| UPC | 082043006706 |
| Unit Count | 128 Fluid Ounces |
| Warranty Description | Everything you purchase from us comes with a 100% Satisfaction Guarantee. Our 100% Satisfaction Guarantee means you’re covered if you are unhappy with the results of the product or if it does not hold up to the claims on the label. |

## Product Details

- **Brand:** 303 Products
- **Item Form:** Liquid
- **Material Feature:** Fragrance Free
- **Scent:** Unscented
- **Specific Uses For Product:** Furniture

## Images

![303 Marine Fabric Guard for Boat Covers & Canvas, 1 Gallon - Image 1](https://m.media-amazon.com/images/I/71FrT2Mq8jS.jpg)
![303 Marine Fabric Guard for Boat Covers & Canvas, 1 Gallon - Image 2](https://m.media-amazon.com/images/I/715wu2kkOmS.jpg)
![303 Marine Fabric Guard for Boat Covers & Canvas, 1 Gallon - Image 3](https://m.media-amazon.com/images/I/716dxfRGJFS.jpg)
![303 Marine Fabric Guard for Boat Covers & Canvas, 1 Gallon - Image 4](https://m.media-amazon.com/images/I/71EdBm5Hq5S.jpg)
![303 Marine Fabric Guard for Boat Covers & Canvas, 1 Gallon - Image 5](https://m.media-amazon.com/images/I/81erUNhg8DL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: What is the coverage per gallon?**
A: Boat Cover :
I have a 24 foot open bow boat. It took 2 gallons to fully saturate the bow cover and mooring cover. I used a pump sprayer. I wish it went further and I would have sprayed the other sides, but 1 application cost over $150 and probably saturated through to the other side anyway.

**Q: Can 303 be used in a washing machine**
A: I do not recall if it specifically states that it can or cannot be used in a washing machine. We have only used it to spray the outdoor furniture, i.e. fabric cushions, etc to make them resistant to rain and water. If used as directed rain and/or water will bead up and not penetrate the fabric cushions.

**Q: The description says it is for. Carpet.  Does that include household carpet?**
A: Yes you can use this on non-vinyl/plastic carpet. However it does produce a strong odor for 2-3 days after application, so if indoors you will want to apply it only on those days where you can open all doors, windows, etc. for adequate ventilation. In our case we often leave for the first night or so to avoid the odor. After adequate drying there is no residual smell nor any discoloration of materials. As for effectiveness, it is an excellent product that protects for several years. Also, you need to know that there are two similar products. One provides UV protection only. The other has a wax additive that adds waterproofing. We use the latter on all outdoor applications. Both have given us excellent protection aboard our sailboat. What else is there to say? We like and have used these two products for years. Good luck and may the wind favor your application.

**Q: Is this ok on vinyl**
A: this product is only for fabric.  Use 303 Products 30350 Aerospace Protectant for anything else: vinyl, leather, plastic, etc.  I have used both products and they perform great!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product.
*by A***N on July 20, 2026*

This works really great one bottle was pretty for my little boat cover and even brought some color back to cover. Was streak free and no greasiness to it at all.

### ⭐⭐⭐⭐⭐ LIFE SAVER for white slipcovers!
*by J***J on October 19, 2017*

We have the Ikea Ektorp sectional with White slipcovers in the sunroom at our airbnb/vrbo vacation rental. We have 2 covers so things can be swapped/cleaned as needed but since IKEA no longer makes 100% cotton slipcovers & the new ones can’t be bleached I wanted to protect our old version for as long as possible. Its sunroom location is directly off the pool area which means its heavily used and requires CONSTANT stain treatment & washing. This is life and we’re happy people enjoy are enjoying their vacation but it does get exhausting pre-treating & removing stains every 4-7 days. A lot of the issues seemed to come from wet bathing suits, suntan oils, and drink spills so I figured waterproofing might prevent wet suit color transfer & allow guests time to clean up spills before they soak in. So far this has done an AMAZING job at prolonging the time between washings!! I haven't noticed any change to the fabrics color, feel, or durability after using this religiously. A few of the cushions did develop some yellow areas that bleach hasn’t taken out but I don't know if that's a result of using this for over a year or if it was caused by a guest. —TIPS / STEPS— These are steps I’ve found work best for our use. 1. Transfer product into HEAVY DUTY spray bottle (such as those found at Home Depot) •Low-quality sprayers deteriorate after 1st use 2. Launder Items 1-2 days prior to treatment: •Treat stains w/ shout •Use as LITTLE un-scented detergent possible •2nd Wash: Just Borax & Vinegar •2 Rinse Cycles •Dryer *The manufacturers online info is very specific about the product only working if there’s NO residual product leftover in fabric. Yes...it's exhausting, but its made a HUGE difference in how well this works compared to just applying after normal wash/dry. 3. Lay down clean cotton drop-cloth in driveway & place clean items on top. 4. Put on gloves & a respirator/mask if sensitive to fumes. Also make sure no animals or children are nearby while spraying. *See bottom for further info about why this is important* 5. Spray 1st side thoroughly. •Paying special attention to the edges & piping since these areas collect dirt & color quickest. 6. Allow items to dry in sun for remaineder of the afternoon 7. After they’ve fully dried I place them in a sterile bag & put it in the garage overnight. 8. The next morning I Repeat steps 3-6 for the opposite side. •It’s entirely possible to do both sides in a single day...but I’ve found the chemical off-gassing lingers FAR LESS TIME if each side is sprayed & allowed to sun-bake for at least 5 hours before treating the opposite side. **GLOVES, MASK & NO ANIMAL / CHILDREN** Yes, there’s a very strong chemical smell that lasts 8+ hours. This is due to the ‘odorless mineral spirits’ content which is used as a carrier to help the waterproofing to penetrate into the fabric fibers. However unlike the name implies, OMS is far from odorless. So, PLEASE BE SURE to use this: •Outdoors in a well ventilated area •Away from all Animals & Children •Plenty of daylight time to allow for the mineral spirits to evaporate/off-gas. ➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖ For the sunroom we also use a Dash & Albert indoor/outdoor rug on top of the large jute rug, this has been a lifesaver and worth its weight in gold when trying to keep a rental spotless! It allows spills to be easily cleaned or even bleached out when necessary. We’ve spot treated between guests & removed to fully bleach during spring cleaning...both options are quick and easy with any stains coming right up. *Since posting the original review above I’ve also started using this on the rentals drop-cloth cabana style curtains on the outdoor pergola. Although we don’t see a lot of rainfall here in San Diego....the overnight condensation and random rainstorms meant they would only last 4-5 months before mildew & mold could no longer be bleached out and they needed replaced. After putting 4 new ones up I sprayed front/back to see if it might slow mildew. It worked well initially but after about 2 months it seemed to accelerate the issue since the new curtains were heavily spotted with mildew while the old bleached ones weren’t. This may be due to my quick spray rather than following the guidelines I use for the slipcovers. The drop cloths are heavily bleached before making the curtains so this residue + treatment might have made a bad combo. I plan to try again while following the slipcover steps to see if it works better, will update my review if so.

### ⭐⭐⭐⭐⭐ Amazing!!!
*by J***T on July 16, 2026*

Stuff is truly amazing. Use the paint roller method!!!!

## Frequently Bought Together

- 303 Products Marine Fabric Guard – Water Repellent & Stain Shielding Fabric Spray, Safe for All Outdoor Upholstery, Simple & Easy to Use, Protectant Spray for Boats, 1 Gallon
- 303 Products Multi-Surface Cleaner - Safely Cleans All Water Safe Surfaces, Including All Types of Fabric and Vinyl, Rinses Residue Free, Manufacturer Recommended, 1 Gallon (30570)
- 303 (30306) Marine UV Protectant Trigger Sprayer, 32 fl. Oz

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-15*