---
product_id: 458948347
title: "UltraFlask Speed (500ml or 600ml) - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap"
brand: "hydrapak"
price: "฿4225"
currency: THB
in_stock: true
reviews_count: 8
category: "Hydra Pak"
url: https://www.desertcart.co.th/products/458948347-ultraflask-speed-500ml-or-600ml-collapsible-soft-flask-water-bottle
store_origin: TH
region: Thailand
---

# SpeedFill one-motion cap Hydration vest compatible 600ml collapsible capacity UltraFlask Speed (500ml or 600ml) - Collapsible Soft Flask Water Bottle for Hydration Vests and Running Packs with Easy Open Cap

**Brand:** hydrapak
**Price:** ฿4225
**Availability:** ✅ In Stock

## Summary

> 💨 UltraFlask Speed: Hydrate faster, run farther, and never miss a beat!

## Quick Answers

- **What is this?** 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?** ฿4225 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/458948347-ultraflask-speed-500ml-or-600ml-collapsible-soft-flask-water-bottle)

## 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.
- • **Hydration On-the-Go:** Fits snugly in most vests & packs for bounce-free stability during your runs or hikes.
- • **Compact & Collapsible:** Soft TPU material shrinks as you drink, eliminating sloshing and saving space.
- • **Customizable Hydration:** Choose between straw or bite valve options with the versatile 42mm cap for effortless sipping.
- • **Lifetime Adventure Guarantee:** Backed by a beyond lifetime warranty—repair or replace for free to keep you moving.

## Overview

The UltraFlask Speed is a 600ml collapsible soft flask designed for runners and outdoor enthusiasts. Made from durable TPU and silicone, it fits securely in hydration vests and packs, shrinking as you drink to reduce bounce. Featuring a patented SpeedFill cap for quick refills and customizable with straw or bite valve options, it offers convenience and versatility. Lightweight at just 46g, it comes with a lifetime warranty ensuring durability and reliability on every adventure.

## Description

Go big. The largest of our ultra-light series, the UltraFlask 600 ml holds more so you can go the distance. Its soft material allows it to fit snugly in most vest pockets and it 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. Included in the package: UltraFlask 600ml Flask SpeedFill Cap Drink Tube Bite Valve Basic Care & Use Instructions Specifications: Capacity: 600 mL / 20 fl oz Weight: 46 g / 1.6 oz Dimensions: 186 mm x 81 mm / 7.3 in x 3.2 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: Good quality - Great addition to son's collection and they were used in the cocodona 250. Perfect size, sturdy product and worked well for the race.

## 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 | B09S8SMLRY |
| Additional Features | Collapsable, Straw |
| Age Range Description | Any Age Group |
| Best Sellers Rank | #3,927 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #165 in Water Bottles |
| Bottle Type | Collapsible Water Bottle |
| Brand | HydraPak |
| Brand Name | HydraPak |
| Capacity | 600 Milliliters |
| Color | Malibu Blue |
| Container Type | Soft Bottle |
| Customer Reviews | 4.4 out of 5 stars 1,570 Reviews |
| Finish Types | Glossy |
| Included Components | 2 Pieces Collapsible 600ml SoftFlask, Cap and Straw |
| Item Dimensions W x H | 3.2"W x 7.3"H |
| Item Height | 7.3 inches |
| Item Type Name | 600ml SoftFlask |
| Item Weight | 84 Grams |
| Manufacturer | HydraPak |
| Manufacturer Warranty Description | Lifetime |
| Material | TPU , PP/POM, Silicone |
| Material Type | TPU, PP/POM, Silicone |
| Model Name | UltraFlask Speed 600ml |
| 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 | Climbing, Exercise & Fitness, Running, Track & Field, Walking |
| Style Name | 600ml - 2 Pack - With Drink Straw |
| Theme | Lightweight hydration for sports or outdoor activities |
| UPC | 834456002918 |
| Unit Count | 2.0 Count |

## Product Details

- **Bottle Type:** Collapsible Water Bottle
- **Brand:** HydraPak
- **Capacity:** 600 Milliliters
- **Color:** Malibu Blue
- **Material:** TPU, PP/POM, Silicone

## Images

![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/61xgCTHYMoL.jpg)

## Available Options

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

## 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

### ⭐⭐⭐⭐⭐ Good quality
*by L***I on May 23, 2025*

Great addition to son's collection and they were used in the cocodona 250. Perfect size, sturdy product and worked well for the race.

### ⭐⭐⭐⭐⭐ Great for trail runs
*by W***T on October 29, 2025*

These UltraFlask Speed bottles are excellent for trail running and longer training sessions. They fit perfectly into most running vest pockets, and the soft design means they conform to your body without bouncing or poking like traditional hard bottles. The bite valve works smoothly with a good flow rate, and the extended straw makes it easy to sip without removing the bottle from the vest — great when you don’t want to break stride. I also appreciate that the straw can be removed if you prefer a lower profile setup. As you drink, the bottle compresses to reduce sloshing and becomes lighter, which is especially helpful later into a run. They’re also simple to clean and dry, and the wide opening makes adding ice or electrolytes easy. Durable, lightweight, and very comfortable to carry — highly recommended for anyone running with a hydration vest or needing compact hydration on the go.

## 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 Thailand*
*Store origin: TH*
*Last updated: 2026-01-29*