---
product_id: 476506437
title: "FITLY Soft Flask - 12 oz (350 ml)- Shrink As You Drink Pocket Soft Water Bottle for Hydration Pack/Running Vest- Folding Water Bottle for Running, Hiking, Cycling - Ski Water Bottles (FLASK350)"
brand: "fitly"
price: "฿2500"
currency: THB
in_stock: false
reviews_count: 5
url: https://www.desertcart.co.th/products/476506437-fitly-soft-flask-12-oz-350-ml-shrink-as-you
store_origin: TH
region: Thailand
---

# Shrinks as you drink, no bounce 12 oz (350 ml) capacity Ultra-lightweight 30 g design FITLY Soft Flask - 12 oz (350 ml)- Shrink As You Drink Pocket Soft Water Bottle for Hydration Pack/Running Vest- Folding Water Bottle for Running, Hiking, Cycling - Ski Water Bottles (FLASK350)

**Brand:** fitly
**Price:** ฿2500
**Availability:** ❌ Out of Stock

## Summary

> 💦 Shrink your bottle, not your pace — hydration that keeps up with you!

## Quick Answers

- **What is this?** FITLY Soft Flask - 12 oz (350 ml)- Shrink As You Drink Pocket Soft Water Bottle for Hydration Pack/Running Vest- Folding Water Bottle for Running, Hiking, Cycling - Ski Water Bottles (FLASK350) by fitly
- **How much does it cost?** ฿2500 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/476506437-fitly-soft-flask-12-oz-350-ml-shrink-as-you)

## 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

- • **Eco-Friendly & Safe:** Made from BPA & PVC-free TPU material, reusable and freezable for sustainable hydration on the go.
- • **Hydrate Without the Bulk:** Collapsible design shrinks as you drink, eliminating slosh and bounce for a seamless active experience.
- • **Pocket-Ready Portability:** Compact 7x7x12 cm size fits effortlessly in running vests, pockets, or bags—stay light and mobile.
- • **Leak-Resistant Smart Valve:** Intelligent bite valve ensures no leaks and easy flow control, so you stay refreshed without interruptions.
- • **Versatile Adventure Companion:** Perfect for running, hiking, cycling, skiing, and climbing—your hydration adapts to every challenge.

## Overview

The FITLY Soft Flask is a 12 oz (350 ml) collapsible, ultra-lightweight hydration bottle designed for active professionals. Crafted from BPA & PVC-free TPU, it shrinks as you drink to prevent sloshing and fits perfectly in running vests or pockets. Leak-resistant and freezable, it’s the ideal eco-friendly companion for running, hiking, cycling, and skiing.

## 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: Génial Taille parfaite pour la mettre dans une sacoche de course à pied, dans un petit sac à main ou dans sa poche de veste Solide
Review: Never leaks, very light and portable.

## 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.
- 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 your 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.
- HYDRATION ON THE MOVE: 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 are freezable so they 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 set in the flask for a couple of hours. To hydrate, simply softly bite the mouthpiece and press the soft flask and enjoy! The harder you press, the faster the liquid will exit.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BBG6LKSP |
| ASIN  | B0BBG6LKSP |
| Batteries Included? | No |
| Batteries Required? | No |
| Color | Black |
| Customer Reviews | 4.0 4.0 out of 5 stars (142) |
| Customer reviews | 4.0 4.0 out of 5 stars (142) |
| Date First Available | 27 August 2022 |
| Date First Available  | 27 August 2022 |
| Included components | F3B |
| Item Package Quantity | 1 |
| Item Weight | 30 g |
| Item model number | F3B |
| Item model number  | F3B |
| Manufacturer | FITLY |
| Manufacturer  | FITLY |
| Material | TPU |
| Number Of Pieces | 1 |
| Part number | F3B |
| Product Dimensions | 7 x 7 x 12 cm; 30 g |
| Product Dimensions  | 7 x 7 x 12 cm; 30 g |
| Shape | Round |
| Size | 0.4 ليتر |
| Special Features | Collapsable, Freezable, Lightweight |
| Specific uses | Running, Hiking, Cycling, Climbing |
| Style | foldable, lightweight |

## Product Details

- **Bottle type:** Collapsible
- **Brand:** FITLY
- **Capacity:** 350 Milliliters
- **Colour:** Black
- **Material:** TPU

## Images

![FITLY Soft Flask - 12 oz (350 ml)- Shrink As You Drink Pocket Soft Water Bottle for Hydration Pack/Running Vest- Folding Water Bottle for Running, Hiking, Cycling - Ski Water Bottles (FLASK350) - Image 1](https://m.media-amazon.com/images/I/71mywxSlt7L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by L***I on 15 September 2025*

Génial Taille parfaite pour la mettre dans une sacoche de course à pied, dans un petit sac à main ou dans sa poche de veste Solide

### ⭐⭐⭐⭐⭐ Review
*by T***S on 24 May 2024*

Never leaks, very light and portable.

### ⭐⭐⭐⭐ Review
*by T***Y on 23 October 2025*

Cómoda de llevar y no pierde agua.pero deja sabor en el agua .

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**Shop now:** [https://www.desertcart.co.th/products/476506437-fitly-soft-flask-12-oz-350-ml-shrink-as-you](https://www.desertcart.co.th/products/476506437-fitly-soft-flask-12-oz-350-ml-shrink-as-you)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-21*