---
product_id: 428065990
title: "Zak Designs Kelso 15 oz Tumbler Set, ( Unicorn ) Non-BPA Leak-Proof Screw-On Lid with Straw Made of Durable Plastic and Silicone, Perfect Baby Cup Bundle for Kids (2pc Set)"
brand: "zak designs"
price: "€ 79.10"
currency: EUR
in_stock: true
reviews_count: 5
category: "Zak Designs"
url: https://www.desertcart.hr/products/428065990-zak-designs-kelso-15-oz-tumbler-set-unicorn-non-bpa
store_origin: HR
region: Croatia
---

# Leak-proof silicone valve straw 15 oz capacity - just right for little hands BPA-free & dishwasher safe durability Zak Designs Kelso 15 oz Tumbler Set, ( Unicorn ) Non-BPA Leak-Proof Screw-On Lid with Straw Made of Durable Plastic and Silicone, Perfect Baby Cup Bundle for Kids (2pc Set)

**Brand:** zak designs
**Price:** € 79.10
**Availability:** ✅ In Stock

## Summary

> 🦄 Hydrate Happily, Spill-Free, and Stylishly – Because Every Sip Should Sparkle!

## Quick Answers

- **What is this?** Zak Designs Kelso 15 oz Tumbler Set, ( Unicorn ) Non-BPA Leak-Proof Screw-On Lid with Straw Made of Durable Plastic and Silicone, Perfect Baby Cup Bundle for Kids (2pc Set) by zak designs
- **How much does it cost?** € 79.10 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/428065990-zak-designs-kelso-15-oz-tumbler-set-unicorn-non-bpa)

## Best For

- zak designs enthusiasts

## Why This Product

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

## Key Features

- • **Kid-Friendly Capacity:** 15 oz size balances hydration needs without bulk, ideal for growing toddlers.
- • **Spill-Proof Confidence:** Innovative silicone valve straw prevents leaks and messes, perfect for on-the-go parents.
- • **Durable & Safe Materials:** BPA-free plastic and silicone ensure long-lasting, toxin-free use for peace of mind.
- • **Sip in Style with Unicorn Magic:** Whimsical, vibrant design that sparks joy and imagination for kids.
- • **Effortless Cleaning & Convenience:** Dishwasher safe with easy disassembly, plus a 2-pack for double the hydration power.

## Overview

The Zak Designs Kelso 15 oz Tumbler Set features two BPA-free, durable plastic tumblers with leak-proof silicone valve straws designed to prevent spills. Sized perfectly for toddlers, these dishwasher-safe tumblers combine practical safety with a playful unicorn design, making hydration fun and mess-free both at home and on the go.

## Description

This leak-proof tumbler set from Zak Designs makes hydration fun for kids! Durable MaterialsThe tumbler is made from lightweight plastic, and the comfortable straw is made from silicone. Everything is completely BPA free and dishwasher safe.Leak-Proof StrawThe straw has a built-in valve that allows liquid to flow when drinking and prevents spills when the tumbler is tipped over. It's perfect for travel or for young children graduating from sippy cups.Hydrate AnywhereThe tumbler won't splash or leak and fits in car cup holders, making it ideal to take on the go. At home, you don't have to worry about spills or stains around fabrics or electronics, and drinks stay easily accessible through the straw.Spec. 2 tumblers with 15 oz capacity.Made of durable plastic and silicone.BPA-Free - Zak is committed to safety.Dishwasher safe, do not microwave.Length: 3.16-inch, Width: 3.16-inch, Height: 6.67-inch.Design: Unicorn.

Review: Whimsical, Practical, and Perfect for Kids! - I recently purchased the Zak Designs Kelso 15 oz Tumbler Set in the Unicorn design, and I am absolutely delighted with this adorable and practical addition to our household. This non-BPA, leak-proof tumbler set has proven to be the ideal solution for keeping my little one hydrated with style and ease. Whimsical Design: The Unicorn design is an absolute hit with my child! The vibrant colors and charming unicorn illustrations add a touch of magic to every sip. It's not just a tumbler; it's a delightful accessory that sparks joy and imagination during snack time or on-the-go adventures. Durability and Quality: Crafted from durable plastic and silicone, these tumblers are built to withstand the energetic activities of kids. The materials used feel sturdy and reliable, and the overall construction ensures longevity. The screw-on lid provides a secure seal, preventing spills and leaks – a true lifesaver for parents of active little ones. Practical Features: The 15 oz size strikes the perfect balance, offering enough capacity for thirst-quenching without being too bulky for little hands. The inclusion of a straw makes sipping easy and mess-free, encouraging independence in young drinkers. The non-BPA materials bring peace of mind, knowing that my child's drinks are safe and free from harmful chemicals. Convenience in Cleaning: Cleaning these tumblers is a breeze. The simple design with minimal parts ensures quick disassembly, making it easy to thoroughly clean every nook and cranny. The practicality of these tumblers extends to the hassle-free maintenance, a bonus for busy parents. Great Value Bundle: The 2pc set in each pack provides fantastic value. Having two tumblers means there's always a clean one ready for use, whether at home, during outings, or packed in a lunchbox. It's a thoughtful touch that adds to the overall convenience of this set. In conclusion, the Zak Designs Kelso 15 oz Tumbler Set in the Unicorn design is a delightful and practical investment for parents seeking a reliable, stylish, and child-friendly solution for hydration. From its whimsical appearance to its durable construction and ease of use, this tumbler set has exceeded my expectations. It's not just a cup; it's a magical companion that makes every sip a joyous experience for my little one. Highly recommended!
Review: Great Cups - Minor Flaws - We love the Zak Designs Kelso Tumbler Set! These cups don’t leak at all, and with our 3-year-old, we’ve never had any issues. They’re easy for little ones to use and have been fabulous overall. That said, our second child has shown a small design flaw: the rubber straw can be pulled out, which sometimes leads to spills in her car seat. Also, after about a year of dishwasher use, the designs start fading and peeling. Overall, these are still great cups and we’d recommend them—just wish the straw design and durability of the print were improved.

## Features

- SIZE: The set contains two tumblers that are 3.16 inches in diameter and 6.67 inches tall. They have a capacity of 15 ounces.
- MATERIAL: The durable tumblers are made of plastic with silicone straws. Long-lasting and BPA free, they're dishwasher safe and should not be microwaved.
- LEAK-PROOF DESIGN: The silicone straw has a built-in valve that allows liquid to flow when drinking and prevents accidental spills when the tumbler is tipped over. The straw is also soft and comfortable for kids to drink from.
- AT HOME OR ON THE GO: The straw tumbler is suited for travel, since it won't leak and fits in car cup holders while keeping drinks easily accessible. It's also great for drinking beverages at home without worrying about stains or nearby electronics.
- LIFESTYLE: Zak Designs drinkware makes hydration fun! These colorful tumblers are a great gift for kids just graduating from sippy cups. The tumblers are fully reusable--no more disposable cups--and a fun addition to the daily routine.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08XVXPK5L |
| Age Range Description | Baby |
| Best Sellers Rank | #69,380 in Baby Products ( See Top 100 in Baby Products ) #1,600 in Sippy Cups |
| Brand | Zak Designs |
| Capacity | 15 Fluid Ounces |
| Colour | Unicorn |
| Country of Origin | USA |
| Customer Reviews | 4.4 out of 5 stars 1,331 Reviews |
| Enclosure Material | Silicone |
| Global Trade Identification Number | 00707849124064 |
| Included Components | Lid, Straw |
| Is the item dishwasher safe? | Yes |
| Is the item microwaveable? | No |
| Item Weight | 0.35 Pounds |
| League Name | ncaa |
| Manufacturer | gearbubble |
| Manufacturer Part Number | 6929-U265 |
| Material | Silicone |
| Material Features | Insulated |
| Model number | 6929-U265 |
| Number of Items | 2 |
| Occasion | Graduation |
| Other Special Features of the Product | Dishwasher Safe |
| OutputCapacity | 15 Fluid Ounces |
| Pattern | Cartoon |
| Product Care Instructions | Machine Wash |
| Product Style | Modern |
| Recommended Uses For Product | Travel |
| Reusability | Reusable |
| Shape | Tumbler |
| Size | 3.16 inches in diameter and 6.67 inches tall |
| Special Feature | Dishwasher Safe |
| Style | Modern |
| Subject Character | Unicorn |
| Theme | Baby |
| UPC | 707849124064 |
| Unit Count | 2.0 Count |

## Product Details

- **Brand:** Zak Designs
- **Capacity:** 15 Fluid Ounces
- **Colour:** Unicorn
- **Included Components:** Lid, Straw
- **Material:** Silicone
- **Recommended Uses For Product:** Travel
- **Shape:** Tumbler
- **Special Feature:** Dishwasher Safe
- **Style:** Modern
- **Theme:** Baby

## Images

![Zak Designs Kelso 15 oz Tumbler Set, ( Unicorn ) Non-BPA Leak-Proof Screw-On Lid with Straw Made of Durable Plastic and Silicone, Perfect Baby Cup Bundle for Kids (2pc Set) - Image 1](https://m.media-amazon.com/images/I/71IIrNpEuXL.jpg)
![Zak Designs Kelso 15 oz Tumbler Set, ( Unicorn ) Non-BPA Leak-Proof Screw-On Lid with Straw Made of Durable Plastic and Silicone, Perfect Baby Cup Bundle for Kids (2pc Set) - Image 2](https://m.media-amazon.com/images/I/717YYSIfPkL.jpg)
![Zak Designs Kelso 15 oz Tumbler Set, ( Unicorn ) Non-BPA Leak-Proof Screw-On Lid with Straw Made of Durable Plastic and Silicone, Perfect Baby Cup Bundle for Kids (2pc Set) - Image 3](https://m.media-amazon.com/images/I/81YDVCQIIQL.jpg)
![Zak Designs Kelso 15 oz Tumbler Set, ( Unicorn ) Non-BPA Leak-Proof Screw-On Lid with Straw Made of Durable Plastic and Silicone, Perfect Baby Cup Bundle for Kids (2pc Set) - Image 4](https://m.media-amazon.com/images/I/71XRr0aR15L.jpg)
![Zak Designs Kelso 15 oz Tumbler Set, ( Unicorn ) Non-BPA Leak-Proof Screw-On Lid with Straw Made of Durable Plastic and Silicone, Perfect Baby Cup Bundle for Kids (2pc Set) - Image 5](https://m.media-amazon.com/images/I/71pGHIPZcTL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: Does the Kelso prevent spills when the tumbler is tipped over?**
A: Yes, and you don't need to remember to close the lid! The Kelso tumbler has a valve in the spout, which lets water flow freely when kids are drinking, but stops spills if the tumbler is tipped over.

**Q: Is the tumbler easy to clean?**
A: Yes, both the spout on top of the lid and the inner straw underneath the lid are removable to make cleaning easy, and the parts are all dishwasher safe.

**Q: How old should my child be to use the Kelso tumbler?**
A: We recommend this tumbler for kids age 3 and up.

**Q: What kind of drinks can go in the Kelso tumbler?**
A: The Kelso tumbler is perfect for everyday cold beverages like water, milk, or juice. Thick smoothies are a little more difficult to drink with the valve, while carbonated drinks can build pressure and push liquid up through the straw.

**Q: Can I travel with the Kelso?**
A: The Kelso tumbler fits in most car and stroller cup holders for on the go convenience. We don't recommend putting the Kelso tumbler in a bag, as pressing on the soft spout can open the valve and allow drinks to flow out.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Whimsical, Practical, and Perfect for Kids!
*by M***Y on 6 March 2024*

I recently purchased the Zak Designs Kelso 15 oz Tumbler Set in the Unicorn design, and I am absolutely delighted with this adorable and practical addition to our household. This non-BPA, leak-proof tumbler set has proven to be the ideal solution for keeping my little one hydrated with style and ease. Whimsical Design: The Unicorn design is an absolute hit with my child! The vibrant colors and charming unicorn illustrations add a touch of magic to every sip. It's not just a tumbler; it's a delightful accessory that sparks joy and imagination during snack time or on-the-go adventures. Durability and Quality: Crafted from durable plastic and silicone, these tumblers are built to withstand the energetic activities of kids. The materials used feel sturdy and reliable, and the overall construction ensures longevity. The screw-on lid provides a secure seal, preventing spills and leaks – a true lifesaver for parents of active little ones. Practical Features: The 15 oz size strikes the perfect balance, offering enough capacity for thirst-quenching without being too bulky for little hands. The inclusion of a straw makes sipping easy and mess-free, encouraging independence in young drinkers. The non-BPA materials bring peace of mind, knowing that my child's drinks are safe and free from harmful chemicals. Convenience in Cleaning: Cleaning these tumblers is a breeze. The simple design with minimal parts ensures quick disassembly, making it easy to thoroughly clean every nook and cranny. The practicality of these tumblers extends to the hassle-free maintenance, a bonus for busy parents. Great Value Bundle: The 2pc set in each pack provides fantastic value. Having two tumblers means there's always a clean one ready for use, whether at home, during outings, or packed in a lunchbox. It's a thoughtful touch that adds to the overall convenience of this set. In conclusion, the Zak Designs Kelso 15 oz Tumbler Set in the Unicorn design is a delightful and practical investment for parents seeking a reliable, stylish, and child-friendly solution for hydration. From its whimsical appearance to its durable construction and ease of use, this tumbler set has exceeded my expectations. It's not just a cup; it's a magical companion that makes every sip a joyous experience for my little one. Highly recommended!

### ⭐⭐⭐⭐ Great Cups - Minor Flaws
*by B***A on 24 February 2026*

We love the Zak Designs Kelso Tumbler Set! These cups don’t leak at all, and with our 3-year-old, we’ve never had any issues. They’re easy for little ones to use and have been fabulous overall. That said, our second child has shown a small design flaw: the rubber straw can be pulled out, which sometimes leads to spills in her car seat. Also, after about a year of dishwasher use, the designs start fading and peeling. Overall, these are still great cups and we’d recommend them—just wish the straw design and durability of the print were improved.

### ⭐⭐⭐⭐ My granddaughter loves these
*by B***. on 7 March 2026*

My 3 year old granddaughter loves these she’s a big unicorn fan. They are easy to clean and made with sturdy materials and they are the perfect size for her. You definitely can’t put anything carbonated in it or else it’ll come flowing out of the top and make a mess.

## Frequently Bought Together

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-25*