---
product_id: 458948347
title: "HydraPak UltraFlask Speed - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap"
brand: "hydrapak"
price: "NT$655"
currency: TWD
in_stock: false
reviews_count: 13
url: https://www.desertcart.tw/products/458948347-hydrapak-ultraflask-speed-collapsible-soft-flask-water-bottle-for-hydration
store_origin: TW
region: Taiwan
---

# one-motion SpeedFill cap 600ml collapsible capacity bounce-free, vest-compatible fit HydraPak UltraFlask Speed - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap

**Brand:** hydrapak
**Price:** NT$655
**Availability:** ❌ Out of Stock

## Summary

> 💦 Stay fast, stay fueled, stay ahead with UltraFlask Speed!

## Quick Answers

- **What is this?** HydraPak UltraFlask Speed - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap by hydrapak
- **How much does it cost?** NT$655 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/458948347-hydrapak-ultraflask-speed-collapsible-soft-flask-water-bottle-for-hydration)

## Best For

- hydrapak enthusiasts

## Why This Product

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

## Key Features

- • **Refill in a flash:** SpeedFill cap with one-motion pop-open tab lets you hydrate quickly at aid stations without missing a beat.
- • **Custom sip, your way:** 42mm customizable cap offers choice between straw or bite valve for effortless hydration on the go.
- • **Adventure-proof guarantee:** Backed by a beyond lifetime warranty—repair or replace free to keep you moving forward.
- • **Lightweight & pack-friendly:** At just 84 grams, fits seamlessly into most hydration vests and running packs for zero bulk.
- • **Hydration that moves with you:** Soft, collapsible TPU flask shrinks as you drink, eliminating bounce and chafing during runs.

## Overview

The HydraPak UltraFlask Speed is a 600ml collapsible soft flask designed for runners and outdoor enthusiasts. Its lightweight, bounce-free design fits most hydration vests and packs, featuring a quick one-motion SpeedFill cap and customizable straw or bite valve. Durable TPU construction and a beyond lifetime warranty ensure reliable hydration on every adventure.

## Description

Part of our ultra-light series, the 500 ml is so light, you might forget you brought it. Weighing in at just over an ounce, it’s optimal hydration, no matter what kind of runner you are. Its soft material conforms to most pockets & shrinks as you drink to minimize water movement. Topped with our SpeedFill cap for quick aid station refills and is ready for use with or without the tube. Ultra lightweight, ultra useful Included in the package: UltraFlask 500ml Flask SpeedFill Cap Drink Tube Bite Valve Basic Care & Use Instructions Specifications: Capacity: 500 mL / 17 fl oz Weight: 41 g / 1.4 oz Dimensions: 186 mm x 58 mm / 7.3 in x 2.3 in Material: TPU, PP, Silicone, POM

Review: Great for running - Love this! I use this in my running vest and it works really well. Doesn’t leak and is easy to clean. The straw was too long for where I like to wear it high up on my vest but I was easily able to cut it to the perfect length for me and fit the piece back on with no issues.
Review: Fantastic Addition to My Running Kit - I bought this to help identify my electrolyte flask from my water flask during a long run and it's great! You have to press down firmly to make sure the lid is locked on, but once you do it doesn't leak and stays put! It's roughly the same size as the flasks that came with my hydration vest, so I can keep track of my hydration levels easily. When not in use, I can roll it up for easy storage.

## Features

- HYDRATION VEST COMPATIBLE: Fits easily in most hydration vests, belts or pack pockets. Provides bounce-free stability and a flexible flask shoulder to prevent chafing.
- COLLAPSIBLE FLASK: Soft material conforms to any pocket, and shrinks as you drink to reduce movement and pack away easily when empty.
- PERFECT FOR AID STATIONS: UltraFlasks are equipped with our SpeedFill Cap designed for quick and easy refilling at aid stations. A side tab pops open the cap in one motion and snaps shut with a click.
- CUSTOMIZABLE CAP: Built for versatility, the UltraFlask comes with a 42mm customizable cap. Choose between straw or bite valve.
- BEYOND LIFETIME WARRANTY: If you experience any issue, we’ll repair or replace the item for free. Whatever it takes to keep your adventure going.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09NF3PJW4 |
| Additional Features | Collapsable, Straw |
| Age Range Description | Any Age Group |
| Best Sellers Rank | #10,222 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #23 in Camping & Hiking Hydration Flasks |
| Bottle Type | Collapsible Water Bottle |
| Brand | HydraPak |
| Brand Name | HydraPak |
| Capacity | 500 ml |
| Color | *Old* Malibu |
| Container Type | Soft Flask Bottle |
| Customer Reviews | 4.3 out of 5 stars 132 Reviews |
| Finish Types | Glossy |
| Global Trade Identification Number | 00834456002635 |
| Included Components | Collapsible 500ml SoftFlask, Cap and Straw |
| Item Dimensions W x H | 2.3"W x 7.3"H |
| Item Type Name | 500ml SoftFlask |
| Item Weight | 41 g |
| Manufacturer | HydraPak |
| Manufacturer Part Number | 834456002635 |
| Manufacturer Warranty Description | Lifetime |
| Material | TPU , PP/POM, Silicone |
| Material Type | TPU, PP/POM, Silicone |
| Material Type Free | Bisphenol A (BPA) Free, Bisphenol S (BPS) Free, Polyvinyl Chloride (PVC) Free, Bisphenol F (BPF) Free, Di(2-ethylhexyl)phthalate (DEHP) Free |
| Model Name | UltraFlask Speed 500ml |
| Model Number | 834456002635 |
| Number of Items | 1 |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Running |
| Reusability | Reusable |
| Shape | Round |
| Special Feature | Collapsable, Straw |
| Sport Type | Climbing, Exercise & Fitness, Running, Track & Field, Walking |
| Style Name | 500ml - With Drink Straw |
| UPC | 834456002635 |
| Unit Count | 1 Count |

## Product Details

- **Bottle Type:** Collapsible Water Bottle
- **Brand:** HydraPak
- **Capacity:** 500 ml
- **Color:** *Old* Malibu
- **Material:** TPU, PP/POM, Silicone

## Images

![HydraPak UltraFlask Speed - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap - Image 1](https://m.media-amazon.com/images/I/611rKy8AUQL.jpg)
![HydraPak UltraFlask Speed - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap - Image 2](https://m.media-amazon.com/images/I/71M2AWJuX6L.jpg)
![HydraPak UltraFlask Speed - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap - Image 3](https://m.media-amazon.com/images/I/81K0u5i0OmL.jpg)
![HydraPak UltraFlask Speed - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap - Image 4](https://m.media-amazon.com/images/I/81iHjTiZo0L.jpg)
![HydraPak UltraFlask Speed - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap - Image 5](https://m.media-amazon.com/images/I/71kZ8zzQ-QL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for running
*by C***E on May 12, 2025*

Love this! I use this in my running vest and it works really well. Doesn’t leak and is easy to clean. The straw was too long for where I like to wear it high up on my vest but I was easily able to cut it to the perfect length for me and fit the piece back on with no issues.

### ⭐⭐⭐⭐⭐ Fantastic Addition to My Running Kit
*by R***L on October 7, 2025*

I bought this to help identify my electrolyte flask from my water flask during a long run and it's great! You have to press down firmly to make sure the lid is locked on, but once you do it doesn't leak and stays put! It's roughly the same size as the flasks that came with my hydration vest, so I can keep track of my hydration levels easily. When not in use, I can roll it up for easy storage.

### ⭐⭐⭐⭐⭐ Great little bottle.
*by A***R on February 21, 2025*

I use this for outdoor activity, where a full sized Camelbak would be inconvenient. I shoved this into a fanny pack recently during skiing. I noticed that the fanny pack got a little wet inside. I don't know if the bottle weeps through the cap, or through the drink nozzle. The plastic taste went away after rinsing a couple of times with plain water. I have also learned not to fill this completely to the brim, as closing the lid will always lead to some of that liquid spilling out.

## Frequently Bought Together

- HydraPak UltraFlask Speed (500ml or 600ml) - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap
- HydraPak Velocity Hydration Reservoir (1.5L or 2L), Slim Profile Water Bladder, Self-Sealing Bite Valve, Leak Proof, Reversible, Dishwasher Safe
- HydraPak Velocity IT (1.5L or 2L Hydration Reservoir) - Insulated Water Bladder/Reservoir for Hydration Pack – Self-Sealing Bite Valve, Leak Proof and Dishwasher Safe

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-08-23*