---
product_id: 131719803
title: "Ultraspire SoftFlask Hydration Flask - BPA & PVC Free Running Flask for Hydration Pack"
brand: "ultraspire"
price: "฿6255"
currency: THB
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.th/products/131719803-ultraspire-softflask-hydration-flask-bpa-and-pvc-free-running-flask
store_origin: TH
region: Thailand
---

# 500ml ultralight capacity silicone Phaser bite valve wide top fits ice cubes Ultraspire SoftFlask Hydration Flask - BPA & PVC Free Running Flask for Hydration Pack

**Brand:** ultraspire
**Price:** ฿6255
**Availability:** ✅ In Stock

## Summary

> 💦 Hydrate smarter, run farther — the flask that keeps up with your hustle.

## Quick Answers

- **What is this?** Ultraspire SoftFlask Hydration Flask - BPA & PVC Free Running Flask for Hydration Pack by ultraspire
- **How much does it cost?** ฿6255 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/131719803-ultraspire-softflask-hydration-flask-bpa-and-pvc-free-running-flask)

## Best For

- ultraspire enthusiasts

## Why This Product

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

## Key Features

- • **Secure & Spill-Proof:** Phaser bite valve combined with MAg Clip keeps your straw locked in place during the bumpiest rides.
- • **Clean Taste, Zero Toxins:** 100% BPA & PVC free, phthalate-free silicone ensures pure, odorless hydration every time.
- • **Comfort Meets Performance:** Soft, flexible material feels great in hand and on lips, making every sip a pleasure.
- • **Stay Cool, Stay Refreshed:** Wide-mouth opening lets you add ice cubes to keep your fluids chilled mile after mile.
- • **Effortless Hydration On-the-Go:** Collapsible design slides smoothly into any hydration vest pocket for seamless trail runs.

## Overview

The Ultraspire SoftFlask is a 500ml ultralight, BPA & PVC-free silicone hydration flask designed for trail and distance runners. Its collapsible shape fits hydration vests effortlessly, featuring a wide top for ice cubes and a silicone Phaser bite valve for spill-resistant, clean-tasting hydration. Durable, comfortable, and toxin-free, it’s the perfect companion for serious athletes who demand convenience and performance.

## Description

This collapsible Softflask carries 300mL or 500mL of fluid. The unique shape allows it to slide easily in and out of a hydration pocket The stem straw allows for fluid delivery from a chest pocket without removing the bottle.

## Features

- Hydration Vest Compatible - It slides easily in and out of a hydration pocket thanks to its collapsible and unique shape.
- Features - Silicone Phaser Bite Valve. Larger diameter top to fit ice cubes and keep fluids cool. Combine with a MAg Clip to keep the straw secure during bumpy rides
- Ultralight Hydration - Makes a great hydration addition or replacement for distance or trail running.
- Easy To Pack And Comfortable Use - Soft material conforms to any pocket. Feels nice in the hand and soft on the lips.
- 100% BPA & PVC Free - Taste and odor free. No harmful chemicals. Phthalate free

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Ultraspire |
| Material | Silicone |
| Color | White |
| Capacity | 500 Milliliters |
| Special Feature | Straw,Valve |
| Age Range (Description) | Adult |
| Product Dimensions | 5"W x 3"H |
| Product Care Instructions | Hand Wash Only |
| Model Name | Softflask |
| Recommended Uses For Product | Trail |
| Number of Items | 1 |
| Reusability | Reusable |
| Shape | Round |
| Material Type Free | BPA Free, PVC Free |
| Style | w/Straw & Bite Valve |
| Finish Type | Glossy |
| Sport | Running |
| Unit Count | 1.0 Count |
| Manufacturer | UltrAspire |
| UPC | 747531034806 |
| Item Package Dimensions L x W x H | 13.15 x 3.78 x 2.32 inches |
| Package Weight | 0.05 Kilograms |
| Item Dimensions  LxWxH | 5 x 5 x 3 inches |
| Brand Name | Ultraspire |
| Suggested Users | unisex-adult |
| Part Number | UA034STW |
| Included Components | item |
| Size | 16.9 Ounces |

## Product Details

- **Brand:** Ultraspire
- **Material:** Silicone
- **Color:** White
- **Capacity:** 500 Milliliters
- **Special Feature:** Straw,Valve

## Images

![Ultraspire SoftFlask Hydration Flask - BPA & PVC Free Running Flask for Hydration Pack - Image 1](https://m.media-amazon.com/images/I/61XZuQerCkL.jpg)
![Ultraspire SoftFlask Hydration Flask - BPA & PVC Free Running Flask for Hydration Pack - Image 2](https://m.media-amazon.com/images/I/61uMbiNi4tL.jpg)
![Ultraspire SoftFlask Hydration Flask - BPA & PVC Free Running Flask for Hydration Pack - Image 3](https://m.media-amazon.com/images/I/51iSTICvIYL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Keeping Me Fueled
*by M***K on September 19, 2023*

I bought this as I was training for a 50K ultramarathon. I had already bought an ultraspire vest in the past, so I wanted to make sure that what I ordered would actually be sized right and work with the vest. I had the hard plastic bottle, but didn't like the sloshing, and that's what led me to the flask.This flask fits perfectly in my vest, and after a few sips, the vacuum created causes the flask to collapse, and gets rid of the sloshing factor. Works well with my electrolyte mixes as well.My one concern is that the flask feels a little thinner than other types of flasks that I own (the GU flask for example). So far I have had zero issues and have actually ordered a second flask so that I can have one with water and one with electrolyte during races.

### ⭐⭐⭐⭐ No protective cap
*by T***A on March 17, 2024*

This is fantastic with only 1 big flaw... No protection cap for mouth piece.This limits the use options dramatically.I end up having to use baggies to carry it or to send in my son's backpack.While it doesn't leak, the mouth piece gets dirty quickly due to exposure, be it dirt, sprays etcHave to be very mindful when using it for anything other than immediate complete use before cleaning time.Other than that? It is wonderful.

### ⭐⭐⭐⭐⭐ Durable
*by A***Z on May 9, 2023*

Just came from competing at an ultra marathon through the Sahara desert and these bottles saved me. Easy to use, durable and convenient.

## Frequently Bought Together

- Ultraspire SoftFlask Hydration Flask - BPA & PVC Free Running Flask for Hydration Pack
- Ultraspire 2.0 Bladder for Hydration Backpacks - BPA & PVC Free - Leakproof Water Reservoir
- UltrAspire Bronco Lightweight Running Race Vest - 5L Fluid Capacity for Hydration Options Including a 1L Reservoir (Not Included)

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**Shop now:** [https://www.desertcart.co.th/products/131719803-ultraspire-softflask-hydration-flask-bpa-and-pvc-free-running-flask](https://www.desertcart.co.th/products/131719803-ultraspire-softflask-hydration-flask-bpa-and-pvc-free-running-flask)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-05*