---
product_id: 413257611
title: "HydraPak UltraFlask Speed (500ml or 600ml) - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap"
brand: "hydrapak"
price: "KD 19.90"
currency: KWD
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.kw/products/413257611-hydrapak-ultraflask-speed-500ml-or-600ml-collapsible-soft-flask-water
store_origin: KW
region: Kuwait
---

# SpeedFill one-motion cap 500ml collapsible capacity Lifetime repair/replacement warranty HydraPak UltraFlask Speed (500ml or 600ml) - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap

**Brand:** hydrapak
**Price:** KD 19.90
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** HydraPak UltraFlask Speed (500ml or 600ml) - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap by hydrapak
- **How much does it cost?** KD 19.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/413257611-hydrapak-ultraflask-speed-500ml-or-600ml-collapsible-soft-flask-water)

## 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

- • **SpeedFill Cap:** One-motion pop-open and snap-shut cap designed for lightning-fast refills at aid stations.
- • **Bounce-Free Hydration:** Fits snugly in vests and packs to prevent annoying movement and chafing during your runs.
- • **Compact & Collapsible:** Soft TPU material shrinks as you drink, saving space and weight for your next adventure.
- • **Adventure-Ready Warranty:** Backed by a beyond lifetime warranty—repair or replace for free to keep you moving forward.
- • **Customizable Drinking Experience:** Choose between a straw or bite valve with the versatile 42mm cap to suit your hydration style.

## Overview

The HydraPak UltraFlask Speed is a 500ml collapsible soft flask designed for runners and athletes who demand bounce-free, space-saving hydration. Featuring a quick-access SpeedFill cap and customizable drinking options, it fits seamlessly into hydration vests and packs. Made from BPA-free materials and backed by a lifetime warranty, it’s engineered to keep you hydrated and unstoppable on every run.

## 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: Exact same as the Outdoor Vitals Skyline 30 ones - It’s solid and the best ones on the market. I have zero idea how I can even complain about it but it does exactly as advertised and don’t notice anything wrong with them. Bought them for my outdoor vitals skyline 30 since I lost one due to tsa. But for what it is I love them. I don’t have any leaks, stores flawless in several running vest I own and two different backpacks, it’s easy to carry and no funky taste and they are easy to clean so I don’t mind putting in some tablets in them even if trailrunning a two day trip. Plus I love the straws so it’s right by my face so I don’t even need to reach and drink instead I just turn my head and bite the valve and drink. It’s just all around a good design
Review: great product and great price - bought these to have extra bottles and longer stems to drink from. love how they collapse as you drink them. keeps the water slosh down to a minimum. easy to clean and use. would recommend

## 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 | B09S8RZB94 |
| Additional Features | Collapsable, Straw |
| Age Range Description | Any Age Group |
| Best Sellers Rank | #4,607 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #204 in Water Bottles |
| Bottle Type | Collapsible Water Bottle |
| Brand | HydraPak |
| Brand Name | HydraPak |
| Capacity | 500 Milliliters |
| Color | Malibu Blue |
| Container Type | Soft Bottle |
| Customer Reviews | 4.5 out of 5 stars 358 Reviews |
| Finish Types | Glossy |
| Included Components | 2 Pieces Collapsible 500ml SoftFlask, Cap and Straw |
| Item Dimensions W x H | 2"W x 8.5"H |
| Item Type Name | 500ml SoftFlask |
| Item Weight | 84 Grams |
| Manufacturer | HydraPak |
| Manufacturer Warranty Description | Lifetime |
| Material | TPU , PP/POM, Silicone |
| Material Type | TPU, PP/POM, Silicone |
| Material Type Free | BPA Free, BPS Free, PVC Free, BPF Free, DEHP Free |
| Model Name | UltraFlask Speed 500ml |
| Number of Items | 2 |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Running |
| Reusability | Reusable |
| Shape | Round |
| Special Feature | Collapsable, Straw |
| Sport Type | Running |
| Style Name | 500ml - 2 Pack - With Drink Straws |
| Theme | Hydration Bottle, Athletic |
| UPC | 834456002901 |
| Unit Count | 2.0 Count |

## Product Details

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

## Images

![HydraPak UltraFlask Speed (500ml or 600ml) - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap - Image 1](https://m.media-amazon.com/images/I/6143Thp1XTL.jpg)
![HydraPak UltraFlask Speed (500ml or 600ml) - 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 (500ml or 600ml) - 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 (500ml or 600ml) - 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 (500ml or 600ml) - 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.

## Questions & Answers

**Q: I have a bunch of these but they tend to get a bit slimy inside. What is the best way to clean them?**
A: We suggest using Bottle Bright to help clean your soft flask.  
https://www.amazon.com/Bottle-Bright-Tablets-Biodegradable-Hydration/dp/B06XYCVDB9/ref=sr_1_4?hvadid=616928149387&hvdev=c&hvlocphy=9028880&hvnetw=g&hvqmt=e&hvrand=2863089430132798370&hvtargid=kwd-12313741154&hydadcr=9377_13604253&keywords=bottle+bright&qid=1693921708&sr=8-4

**Q: Will they take a Katadyn BeFree filter?**
A: Haven't tried putting the filter in, but I carry the BeFree collapsable water filter and flask with me on most of my runs, hikes, and long gravel rides.  It folds up easy and weighs nothing.  I have been doing this for years.  Very fortunate to live in Washington where there is clean, clear water on most of the trails & mountain gravel roads up here.

**Q: osprey duro 15, will it fit the front pockets?**
A: Hi there! Our flasks and reservoirs will fit most running vests. Please see below dimensions and compare to that of your running vest to see if they are compatible. 

Dimensions: 7.3 x 2.3 in

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exact same as the Outdoor Vitals Skyline 30 ones
*by R***N on August 29, 2025*

It’s solid and the best ones on the market. I have zero idea how I can even complain about it but it does exactly as advertised and don’t notice anything wrong with them. Bought them for my outdoor vitals skyline 30 since I lost one due to tsa. But for what it is I love them. I don’t have any leaks, stores flawless in several running vest I own and two different backpacks, it’s easy to carry and no funky taste and they are easy to clean so I don’t mind putting in some tablets in them even if trailrunning a two day trip. Plus I love the straws so it’s right by my face so I don’t even need to reach and drink instead I just turn my head and bite the valve and drink. It’s just all around a good design

### ⭐⭐⭐⭐⭐ great product and great price
*by D***M on January 5, 2025*

bought these to have extra bottles and longer stems to drink from. love how they collapse as you drink them. keeps the water slosh down to a minimum. easy to clean and use. would recommend

### ⭐⭐⭐⭐⭐ So lightweight!
*by L***L on April 15, 2024*

Bought these to put in my vest for training for a marathon. I love how light weight they are and easy to refill! Awesome that I can put them in the dishwasher and not worry about left over taste from electrolyte tabs. Because they are so flexible, a vacuum is created as you drink from them. So at first when the bottle is full, it can stand on its own. After the first sip, the water stays at the top of the bottle in the mouthpiece and the bottom of the bottle starts to curl upwards and suck into itself and it can no longer stand on its own *unless* you blow air back into the bottle to give it shape again. Completely empty, it lays flat on itself and is quite small. See pictures! Some reviewers were mad about this feature but that is how they were designed- to be slim and lightweight for exercise vests/belts, not for carrying by hand and resting on tables. Looking at buying more in different sizes!

## 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 Kuwait*
*Store origin: KW*
*Last updated: 2026-05-19*