---
product_id: 437051866
title: "(2 Bottles) Small, Refillable Gu Flask for Sports Nutrition - Cycling, Running, Triathlons, Marathons. 110ml (3.5oz) Plastic, White, Cylindrical, Reusable, Dishwasher Safe"
brand: "energy flask"
price: "€ 80.75"
currency: EUR
in_stock: true
reviews_count: 5
category: "Energy Flask"
url: https://www.desertcart.hr/products/437051866-2-bottles-small-refillable-gu-flask-for-sports-nutrition-cycling
store_origin: HR
region: Croatia
---

# 110ml compact capacity Dishwasher safe for easy cleaning Reusable & eco-friendly (2 Bottles) Small, Refillable Gu Flask for Sports Nutrition - Cycling, Running, Triathlons, Marathons. 110ml (3.5oz) Plastic, White, Cylindrical, Reusable, Dishwasher Safe

**Brand:** energy flask
**Price:** € 80.75
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay Fueled, Stay Ahead — The Ultimate Gel Flask for Millennial Athletes

## Quick Answers

- **What is this?** (2 Bottles) Small, Refillable Gu Flask for Sports Nutrition - Cycling, Running, Triathlons, Marathons. 110ml (3.5oz) Plastic, White, Cylindrical, Reusable, Dishwasher Safe by energy flask
- **How much does it cost?** € 80.75 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/437051866-2-bottles-small-refillable-gu-flask-for-sports-nutrition-cycling)

## Best For

- energy flask enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Slim 4-inch design fits perfectly in tri-suit pockets, bike bags, and running belts without bulk.
- • **Eco-Champion Choice:** Cut waste and save money by ditching single-use packets—better for your wallet and the planet.
- • **Effortless Maintenance:** Dishwasher safe and easy to clean, so you spend less time prepping and more time training.
- • **Mess-Free Energy Boost:** Wide mouth & secure cap eliminate sticky gel packet hassles and leaks during intense workouts.
- • **Fuel Your Endurance, Your Way:** Refillable 110ml flask lets you customize gels & DIY energy mixes for peak performance.

## Overview

The Energy Flask is a 110ml reusable, BPA/PVC-free gel flask designed for endurance athletes. Its compact, cylindrical shape fits seamlessly into cycling, running, and triathlon gear. Featuring a wide mouth for easy filling and cleaning, plus a secure, leak-proof cap, it eliminates the mess and waste of single-use gel packets. Dishwasher safe and semi-rigid for easy squeezing, this flask supports DIY energy gels and fuels your performance sustainably and efficiently.

## Description

Energy Flask is a refillable semi-rigid gu flask for endurance sports used to carry energy gel, DIY energy fuel, hydration mix, pickle juice or water. These reusable, small gel bottle are simple, fast, and convenient to use and provide a better way to fuel your next workout or adventure. Perfect hammer flask for running, cycling, triathlons, hiking, climbing, snow sports, bike packing, or any endurance sports activity. Compact design makes this gel bottle easy to fit where you need them to: cycling jersey pocket, flipbelt, frame or bar bag, hip pack, fuel belt or hydration pack.

Review: Great as a Triathlon (or running race) Flask! - I am a Triathlete who does mostly Olympic and Half Ironman Distance races. I have bought a bunch of flasks trying to find the best for gels and liquids for my bike storage and a my TriSuit pockets. This is the best I have found. Size is great (fits all my trisuit pockets and my Tribike built in storage container). Great top (closes tightly/no leaking, easy to open with teeth and close), gets liquids out great. Slides in and out of pockets great. The only thing I would have changed is not having the base of it so firm (hard to squeeze out last bits of gels). However, compared sooo favorably to all others I tried. The rest had many flaws (too big, doesn't close well, hard to consume while running, material sticks/rather than slides into pockets etc). I have bought 8 of these so far and just ordered 6 more (want to make sure I have a bunch if they for some reason become unavailable.
Review: Great little bottles!! - I’ve been using this for a few months now for small runs and larger runs. Specifically with 10 K runs it works really well with homemade liquid gel solutions to help you give you that boost of energy. Using it with a running vest works extraordinarily well as well as using it for 15k to 20 K runs will allow you to have extra juice to booster energy. Honestly, the price is a little bit expensive, but the usage is well worth the price.

## Features

- CONVENIENT – Small gel flask that is easy to use and easy to clean. No more struggling with individual gel packets during your workouts or races. These gel flasks allow you to consume as much or as little as you need, as often as you want.
- CLEAN – Eliminate sticky messes and carrying empty gel packet waste.
- EASY – Simple to open/close with secure cap. Unlike other gu bottle, Energy Flask has a wide mouth that makes it easy to fill and simple to clean (dishwasher safe). Molded finger holds on one side for secure grip.
- SAVE $$$ and REDUCE WASTE - Can use do-it-yourself (DIY) sports fuel. Create your own gel mixtures with maple syrup, honey, coffee, Nutella, etc. Better for the environment by eliminating individual gel packets.
- COMPACT and BPA/PVC FREE - Unlike other larger gel bottles, Energy Flask is only about 4" tall and holds 110 ml (3.5oz) capacity. Semi-rigid. Squeezable. Easily fits in small places like cycling jersey pocket, bike frame bags, running fuel belt, hip pack, ski pack, hiking bag, summit pack, or hydration pack.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08LHN3WMC |
| Additional Features | Dishwasher Safe |
| Age Range Description | Any Age Group |
| Best Sellers Rank | #40,661 in Sports, Fitness & Outdoors ( See Top 100 in Sports, Fitness & Outdoors ) #36 in Camping & Hiking Canteens & Water Bottles (Sports, Fitness & Outdoors) |
| Bottle Type | standard bottle |
| Brand | Energy Flask |
| Brand Name | Energy Flask |
| Capacity | 110 Milliliters |
| Colour | White |
| Container Type | Bottle |
| Customer Reviews | 4.5 out of 5 stars 204 Reviews |
| Finish Types | Polished |
| Item Dimensions W x H | 10.9W x 10.9H Centimeters |
| Item Type Name | Gel flask |
| Manufacturer | Energy Flask |
| Manufacturer Part Number | 001 |
| Material | Plastic |
| Material Type | Plastic |
| Material Type Free | Polyvinyl Chloride (PVC) Free |
| Model Name | Energy Flask |
| Number of Items | 2 |
| Number of Packs | 2 |
| Product Care Instructions | Dishwasher Safe |
| Recommended Uses For Product | Climbing, Hiking, Run, Sports |
| Reusability | Reusable |
| Shape | Cylindrical |
| Special Feature | Dishwasher Safe |
| Specific Uses For Product | Endurance sports nutrition, Running, Cycling, Triathlons, Hiking, Climbing, Snow sports, Bike packing |
| Sport Type | Cycling, Running, hiking |
| Style Name | Casual |
| Theme | Sports Nutrition |
| Unit Count | 2 Count |

## Product Details

- **Brand:** Energy Flask
- **Material:** Plastic
- **Bottle Type:** standard bottle
- **Colour:** White
- **Capacity:** 110 Milliliters

## Images

![(2 Bottles) Small, Refillable Gu Flask for Sports Nutrition - Cycling, Running, Triathlons, Marathons. 110ml (3.5oz) Plastic, White, Cylindrical, Reusable, Dishwasher Safe - Image 1](https://m.media-amazon.com/images/I/61wwrfHa8wL.jpg)
![(2 Bottles) Small, Refillable Gu Flask for Sports Nutrition - Cycling, Running, Triathlons, Marathons. 110ml (3.5oz) Plastic, White, Cylindrical, Reusable, Dishwasher Safe - Image 2](https://m.media-amazon.com/images/I/31vXDuLD-8L.jpg)
![(2 Bottles) Small, Refillable Gu Flask for Sports Nutrition - Cycling, Running, Triathlons, Marathons. 110ml (3.5oz) Plastic, White, Cylindrical, Reusable, Dishwasher Safe - Image 3](https://m.media-amazon.com/images/I/61-YNHm76lL.jpg)
![(2 Bottles) Small, Refillable Gu Flask for Sports Nutrition - Cycling, Running, Triathlons, Marathons. 110ml (3.5oz) Plastic, White, Cylindrical, Reusable, Dishwasher Safe - Image 4](https://m.media-amazon.com/images/I/915g8AB+p1L.jpg)
![(2 Bottles) Small, Refillable Gu Flask for Sports Nutrition - Cycling, Running, Triathlons, Marathons. 110ml (3.5oz) Plastic, White, Cylindrical, Reusable, Dishwasher Safe - Image 5](https://m.media-amazon.com/images/I/81eHEDbw9gL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great as a Triathlon (or running race) Flask!
*by M***R on 1 June 2021*

I am a Triathlete who does mostly Olympic and Half Ironman Distance races. I have bought a bunch of flasks trying to find the best for gels and liquids for my bike storage and a my TriSuit pockets. This is the best I have found. Size is great (fits all my trisuit pockets and my Tribike built in storage container). Great top (closes tightly/no leaking, easy to open with teeth and close), gets liquids out great. Slides in and out of pockets great. The only thing I would have changed is not having the base of it so firm (hard to squeeze out last bits of gels). However, compared sooo favorably to all others I tried. The rest had many flaws (too big, doesn't close well, hard to consume while running, material sticks/rather than slides into pockets etc). I have bought 8 of these so far and just ordered 6 more (want to make sure I have a bunch if they for some reason become unavailable.

### ⭐⭐⭐⭐⭐ Great little bottles!!
*by H***R on 27 January 2025*

I’ve been using this for a few months now for small runs and larger runs. Specifically with 10 K runs it works really well with homemade liquid gel solutions to help you give you that boost of energy. Using it with a running vest works extraordinarily well as well as using it for 15k to 20 K runs will allow you to have extra juice to booster energy. Honestly, the price is a little bit expensive, but the usage is well worth the price.

### ⭐⭐⭐⭐⭐ Perfect Size
*by K***Y on 3 March 2025*

My go-to energy source! This is compact, convenient, durable yet easy to squeeze that has been flawless. The flow for my maple syrup is smooth, getting that quick energy I need in just a quick easy squeeze. The top pops into place securing it as I have not had it leak on me yet. This is right up my alley as an endurance athletic that I use for mtb, gravel, road and fat-biking. I could not ask for a better product that fits my needs and wants. Super easy to clean. For the price, it has paid for itself ten times over if I were to consistently use gels, such a great investment. Well worth the purchase!

## Frequently Bought Together

- (2 Bottles) Small, Semi-Rigid, Easy-to-Clean, Refillable Gu Flask for Sports Nutrition Liquid Energy Gel Flask - Cycling Flask, Running Flask, Triathlons, Marathons. 110ml (3.5oz)
- FITLY Soft Flask - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity
- HydraPak SoftFlask - Collapsible Nutrition Flask (150ml or 250ml) - BPA Free, Easy Open Cap, Foldable, Lightweight

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-04*