---
product_id: 501379147
title: "Soft Water Bottle | Shrink As You Drink Soft Flask for Hydration Pack | Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity"
brand: "fitly"
price: "¥5768"
currency: JPY
in_stock: true
reviews_count: 8
category: "Fitly"
url: https://www.desertcart.jp/products/501379147-soft-water-bottle-shrink-as-you-drink-soft-flask-hydration
store_origin: JP
region: Japan
---

# Collapsible & pocket-friendly for on-the-go 400ml capacity for optimal hydration Freezable design doubles as an ice pack Soft Water Bottle | Shrink As You Drink Soft Flask for Hydration Pack | Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity

**Brand:** fitly
**Price:** ¥5768
**Availability:** ✅ In Stock

## Summary

> 💦 Stay hydrated, stay ahead—shrink your bottle, not your hustle!

## Quick Answers

- **What is this?** Soft Water Bottle | Shrink As You Drink Soft Flask for Hydration Pack | Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity by fitly
- **How much does it cost?** ¥5768 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/501379147-soft-water-bottle-shrink-as-you-drink-soft-flask-hydration)

## 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

- • **Shrink-As-You-Drink Tech:** No sloshing, no bounce—just smooth hydration on the move.
- • **Leak-Resistant Bite Valve:** Hydrate confidently with a smart valve that prevents spills and drips.
- • **Eco-Friendly & BPA/PVC-Free:** Sustain your active lifestyle without compromising the planet.
- • **Ultra-Lightweight & Flexible:** Stay light on your feet with a bottle that molds to your hand and pack.
- • **Versatile for Every Adventure:** From running to climbing, fits seamlessly in pockets or bags, ready for any challenge.

## Overview

The FITLY Soft Water Bottle is a 400ml collapsible hydration flask designed for active professionals who demand convenience and performance. Its innovative shrink-as-you-drink design eliminates sloshing, while the leak-resistant bite valve ensures spill-free use. Lightweight, freezable, and BPA/PVC-free, this bottle folds compactly to fit in pockets or bags, making it the perfect companion for running, hiking, cycling, and climbing.

## Description

Shop FITLY Soft Water Bottle | Shrink As You Drink Soft Flask for Hydration Pack | Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity. Free delivery and returns on all eligible orders.

Review: Super handy for running - I’ve bought other bladders from this company before, which have lasted for well over a year (still going) and recommend them to friends. They’re really light weight and are great to fit in your pocket when snowboarding or in a small bag when out and about. I’ve never had any issues with leaking and although initial they do have a funny taste (not too bad), that quickly goes. This one seems much the same - bought for running as I hate carrying part empty bottles - these reduce in size as you drink, so there is never air in them. The holder seems weak made and fits well. I love the pocket at the front - great for keys and a bank card for emergencies.
Review: Handy size - This fits perfectly in my pocket and doesn't leak (you have to kind of bite down for the water to come out) Took one star off as it doesn't have cap/cover so all the fluff from inside my pocket stuck to the mouthpiece.

## Features

- HYDRATION ON THE MOVE: Our collapsible water bottle 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 flasks shrink as you drink, taking up minimal space and won’t slosh around, making it perfect for runners and vigorous activities.
- SHRINKS AS YOU DRINK: Our collapsible water bottle is uniquely designed to shrink as you drink. This ensures the water doesn’t slosh around, bounce or rattle. The flexible design shapes to your hand & body, meaning the soft flask is never unwieldy. Our flexible water bottle 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 soft flask is no exception. Enjoy limitless use from our collapsible water bottle that is 100% BPA & PVC-free.
- MADE TO 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 comes in 5 size variations and are freezable so they can double as an ice pack.
- DIRECTIONS FOR USE: Our folding water bottle is easy to use and for hydration on the move. 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 | B0BBG713HW |
| Age Range Description | Adult |
| Best Sellers Rank | 3,871 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 8 in Camping & Hiking Flasks |
| Bottle Type | Collapsible Bottle |
| Bottle type | Collapsible Bottle |
| Brand | FITLY |
| Capacity | 400 Millilitres |
| Colour | Black |
| Container Type | Bottle |
| Country of Origin | China |
| Customer Reviews | 4.0 out of 5 stars 2,394 Reviews |
| Finish | Smooth |
| Global Trade Identification Number | 07432112146117 |
| Item Dimensions W x H | 8.9W x 17.7H centimetres |
| Item Type Name | FLASK |
| Item height | 7.87 inches |
| Manufacturer | FITLY |
| Material | Plastic |
| Material Type Free | Polyvinyl Chloride (PVC) Free |
| Model Name | Borraccia Morbida |
| Number of Items | 1 |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Hiking |
| Reusability | Moderately reusable |
| Shape | Rectangular |
| Special Features | Freezable, Leak Proof, Lightweight |
| Special feature | Freezable, Leak Proof, Lightweight |
| Sport Type | Cycling |
| Style | 400ml |
| Theme | Sport |
| Unit Count | 1.0 Count |

## Product Details

- **Bottle type:** Collapsible Bottle
- **Brand:** FITLY
- **Capacity:** 400 Millilitres
- **Colour:** Black
- **Material:** Plastic

## Images

![Soft Water Bottle | Shrink As You Drink Soft Flask for Hydration Pack | Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity - Image 1](https://m.media-amazon.com/images/I/71RJGxet8+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Super handy for running
*by Z***D on 2 September 2025*

I’ve bought other bladders from this company before, which have lasted for well over a year (still going) and recommend them to friends. They’re really light weight and are great to fit in your pocket when snowboarding or in a small bag when out and about. I’ve never had any issues with leaking and although initial they do have a funny taste (not too bad), that quickly goes. This one seems much the same - bought for running as I hate carrying part empty bottles - these reduce in size as you drink, so there is never air in them. The holder seems weak made and fits well. I love the pocket at the front - great for keys and a bank card for emergencies.

### ⭐⭐⭐⭐ Handy size
*by C***K on 11 June 2023*

This fits perfectly in my pocket and doesn't leak (you have to kind of bite down for the water to come out) Took one star off as it doesn't have cap/cover so all the fluff from inside my pocket stuck to the mouthpiece.

### ⭐⭐⭐⭐⭐ Functional, works well and handy pocket for keys and essentials.
*by M***N on 25 March 2025*

I was impressed with how it felt on a run, fit my hand well (glove size 9) and the extra pocket is great for small things like keys and inhalers, or Gu.(better than things jingling in a pocket). Using is great and it's easy to take occasional sips without breaking a stride. Reflectors on the straps and side are a nice touch. Doesn't leak or drip. Bit of a funny "new" taste but better with some soapy water and a soak in mild citric acid. I'm sure it'll go with use (edit: it has) Ideal for 5-10k ultras.

## Frequently Bought Together

- FITLY Soft Flask - Shrink As You Drink Soft Water Bottle for Hydration Pack - Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity
- Fitgriff® Running Belt for Men & Women - Secure Jogging Pouch for Phone, Keys & Essentials - For All Cell Phones
- FlipBelt Classic Running Belt, Running Fanny Pack for Women and Men, USA Company

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/501379147-soft-water-bottle-shrink-as-you-drink-soft-flask-hydration](https://www.desertcart.jp/products/501379147-soft-water-bottle-shrink-as-you-drink-soft-flask-hydration)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-05-21*