---
product_id: 708476568
title: "FITLY Soft Flask - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity"
brand: "fitly"
price: "฿1368"
currency: THB
in_stock: true
reviews_count: 12
category: "Fitly"
url: https://www.desertcart.co.th/products/708476568-fitly-soft-flask-shrink-as-you-drink-soft-water-bottle
store_origin: TH
region: Thailand
---

# Shrinks as you drink, no bounce or slosh 10 oz capacity for optimal hydration Ultra-lightweight at 0.03 kg FITLY Soft Flask - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity

**Brand:** fitly
**Price:** ฿1368
**Availability:** ✅ In Stock

## Summary

> 💦 Stay light, stay fast, stay hydrated with FITLY’s shrink-as-you-drink flask!

## Quick Answers

- **What is this?** FITLY Soft Flask - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity by fitly
- **How much does it cost?** ฿1368 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/708476568-fitly-soft-flask-shrink-as-you-drink-soft-water-bottle)

## Best For

- fitly enthusiasts

## Why This Product

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

## Key Features

- • **Smart Sip Technology:** Intelligent bite valve with leak-resistant mouthpiece ensures easy, controlled hydration on the move.
- • **Versatile Performance:** Freezable and leak-proof, perfect for running, hiking, cycling, climbing, and all your active pursuits.
- • **Eco-Conscious & Durable:** Made from BPA & PVC-free thermoplastic polyurethane, built to last and reduce single-use waste.
- • **Hydrate Without the Bulk:** Collapsible design shrinks as you drink, eliminating bounce and slosh for a seamless run.
- • **Pocket-Ready Portability:** Folds flat to fit effortlessly in pockets, vests, or bags—carry hydration anywhere, hands-free.

## Overview

The FITLY Soft Flask is a 10 oz collapsible hydration bottle designed for active professionals who demand convenience and performance. Its unique shrinking design prevents sloshing, while ultra-lightweight, BPA & PVC-free materials ensure durability and eco-friendliness. Leak-proof and freezable, it fits seamlessly into running vests or pockets, making it the ultimate hydration companion for running, hiking, cycling, and climbing.

## Description

FITLY Flasks are ideal for quick drinks on the run. Gobble up a gel, wet a dry throat, or re-hydrate. Designed to be used while running or biking. Stores directly in your front, side, or back pockets. FITLY Flasks shrink as you drink so nothing ever moves, bounces or rattles.

Review: Perfect for Running - These flasks are perfect for running. I carry these in an expandable waste belt and the fit is great. Light weight, convenient and easy to use while running. I usually carry one in cooler weather and two when it gets hot. The size and capacity are perfect.
Review: AWESOME accessory to enhance my runs and keep me hydrated !! - When I first got into running long distance a few years ago I tried so many iterations of bottles - this by far is my favorite! It’s a solid design, holds just the right amount of water for me and fits in my run vest so I can be hands free, plus it doesn’t break the bank. I’ve also weirdly enough put warmer water in it for winter running! They last a long time - the spout makes the water easy to access and if I don’t bring my vest it’s light and hand sized, making it easy to carry. All in all great functionality. Also their customer service is super friendly and knowledgeable! Rare to have a person on the line AND one who’s friendly.

## Features

- HYDRATION ON THE MOVE: Our collapsible running soft flask is a compact and eco-friendly way to stay hydrated on the move! The soft water bottle is the perfect hydration tool for active individuals. Our soft water bottles for runners shrink as you drink, taking up minimal space and won’t slosh around, making it perfect for running, hiking, skiing, or any rigorous activity. Now available in a Forest Green color option.
- SHRINKS AS YOU DRINK: Our running vest water bottle is uniquely designed to shrink as you drink. This ensures the water doesn’t slosh around, bounce, or rattle. The flexible design of our hydration flask shapes to your hand & body, meaning the soft flask is never unwieldy. Our flexible running flask features an intelligent bite valve & leak-resistant mouthpiece.
- STAY LIGHT ON YOUR FEET: FITLY’s collapsible flask is purposely lightweight, ensuring you stay light on your feet and not weighted down by unnecessary bulk. At FITLY, reusability is deeply important to us, and our water bladder is no exception. Enjoy limitless use from our portable soft water bottle for running vest that is 100% BPA & PVC-free.
- VERSATILE & TRAVEL-FRIENDLY DESIGN: Our soft flask is specially crafted for vigorous activities such as running, hiking, cycling, and climbing. The perfect sporting companion, take it everywhere with you! Our soft water bottle can be folded and tucked into your pocket or bag. Our soft flask water bottle comes in 5 size variations and is freezable, so it can double as an ice pack.
- DIRECTIONS FOR USE: We recommend rinsing the flask thoroughly before first use. If you experience taste, mix ½ a teaspoon of baking soda with water, shake, and rinse. Users have also found the following to be useful: Fill with milk, shake, and rinse. Add drops of lemon. Let an orange peel or tea bag sit in the flask for a couple of hours. To hydrate, simply softly bite the mouthpiece and press the soft flask to enjoy! The harder you press, the faster the liquid will exit.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DJGS527C |
| Additional Features | Airtight, Freezable, Leak Proof, Lightweight, Scratch Resistant |
| Best Sellers Rank | #1,640 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #4 in Camping & Hiking Hydration Flasks |
| Bottle Type | Reusable running flask |
| Brand Name | FITLY |
| Capacity | 10 Fluid Ounces |
| Color | Forest Green |
| Customer Reviews | 4.2 4.2 out of 5 stars (3,532) |
| Included Components | F3LFG |
| Item Type Name | Running Accessory |
| Item Weight | 0.03 Kilograms |
| Manufacturer | FITLY |
| Material Type | Thermoplastic Polyurethane |
| Model Name | F3LFG |
| Number of Items | 1 |
| Product Care Instructions | Hand Wash Only |
| Reusability | Reusable |
| Shape | Cylindrical |
| Unit Count | 1.0 Count |

## Product Details

- **Bottle Type:** Reusable running flask
- **Brand:** FITLY
- **Capacity:** 10 Fluid Ounces
- **Color:** Forest Green
- **Material:** Thermoplastic Polyurethane

## Images

![FITLY Soft Flask - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity - Image 1](https://m.media-amazon.com/images/I/51vUX6b9QrL.jpg)
![FITLY Soft Flask - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity - Image 2](https://m.media-amazon.com/images/I/7171dAWXipL.jpg)
![FITLY Soft Flask - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity - Image 3](https://m.media-amazon.com/images/I/71qvX73M1HL.jpg)
![FITLY Soft Flask - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity - Image 4](https://m.media-amazon.com/images/I/71GGkUlxwuL.jpg)
![FITLY Soft Flask - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity - Image 5](https://m.media-amazon.com/images/I/71659tMkG-L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for Running
*by T***M on March 24, 2026*

These flasks are perfect for running. I carry these in an expandable waste belt and the fit is great. Light weight, convenient and easy to use while running. I usually carry one in cooler weather and two when it gets hot. The size and capacity are perfect.

### ⭐⭐⭐⭐⭐ AWESOME accessory to enhance my runs and keep me hydrated !!
*by E***. on July 16, 2025*

When I first got into running long distance a few years ago I tried so many iterations of bottles - this by far is my favorite! It’s a solid design, holds just the right amount of water for me and fits in my run vest so I can be hands free, plus it doesn’t break the bank. I’ve also weirdly enough put warmer water in it for winter running! They last a long time - the spout makes the water easy to access and if I don’t bring my vest it’s light and hand sized, making it easy to carry. All in all great functionality. Also their customer service is super friendly and knowledgeable! Rare to have a person on the line AND one who’s friendly.

### ⭐⭐⭐⭐ So far this is a love/hate thing
*by W***Y on May 29, 2024*

Update on this, the seller reached out and was very interested in what was going on, great customer support for that. The reason for the 4 stars is because this still feels loose in my hand. When the bottle goes down, i still flip it around and have to hand grip it. No matter what I try. Here's where Im at with this. I LOVE the idea of the smaller water bottle in your hand and not carrying some oversized jug. However..... * When the bottle gets low, you have to switch it from above your hand to inside, if not you wont be able to get the rest of the water out. * The wrist strap should be able to tie closer to your hand. Its very loose when again the water bottle is not full. I find it slipping and have to keep my hand clenched so it wont slip off. * The drinking method does take a minute to get use to, its not just sucking water. You have to bite and pinch the end to get the water to come out. Overall its a much better mouse trap thats for sure. But there are some things that could be refined for sure.

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**Shop now:** [https://www.desertcart.co.th/products/708476568-fitly-soft-flask-shrink-as-you-drink-soft-water-bottle](https://www.desertcart.co.th/products/708476568-fitly-soft-flask-shrink-as-you-drink-soft-water-bottle)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-29*