---
product_id: 324165357
title: "Bite Valve Replacement Sheath - for Hydration Reservoir Soft Flask - 2 Pack, Clear (A181)"
brand: "hydrapak"
price: "¥2306"
currency: JPY
in_stock: true
reviews_count: 13
category: "Hydra Pak"
url: https://www.desertcart.jp/products/324165357-bite-valve-replacement-sheath-for-hydration-reservoir-soft-flask-2
store_origin: JP
region: Japan
---

# Fits all HydraPak valves Durable silicone build Ultra-light 5.7g weight Bite Valve Replacement Sheath - for Hydration Reservoir Soft Flask - 2 Pack, Clear (A181)

**Brand:** hydrapak
**Price:** ¥2306
**Availability:** ✅ In Stock

## Summary

> 💦 Upgrade your sip game with the ultimate bite valve backup!

## Quick Answers

- **What is this?** Bite Valve Replacement Sheath - for Hydration Reservoir Soft Flask - 2 Pack, Clear (A181) by hydrapak
- **How much does it cost?** ¥2306 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/324165357-bite-valve-replacement-sheath-for-hydration-reservoir-soft-flask-2)

## 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

- • **Lightweight & Compact:** At just 5.7 grams, these sheaths add zero bulk—perfect for minimalist runners and adventurers.
- • **Emergency Ready 2-Pack:** Keep a spare on hand in your gear kit—because hydration emergencies shouldn’t slow you down.
- • **Universal Compatibility:** Seamlessly replaces all HydraPak bite valves across Reservoirs, SoftFlasks, and UltraFlasks for hassle-free hydration.
- • **Easy to Clean & Maintain:** Dishwasher safe and easy to disassemble, ensuring your hydration system stays fresh and ready for every adventure.
- • **Soft Yet Sturdy Silicone:** Crafted from premium silicone for a gentle bite feel that withstands rugged outdoor use and chewers alike.

## Overview

HydraPak Bite Valve Replacement Sheaths are durable, soft silicone covers designed to fit all HydraPak hydration reservoirs and soft flasks. Lightweight at 5.7 grams per sheath, they provide a hygienic, easy-to-clean solution for maintaining your hydration system’s performance. Sold in convenient 2-packs, these sheaths are perfect for outdoor enthusiasts who demand reliability and comfort on every run, hike, or climb.

## Description

Replacing your bite valve from time to time helps maintain your hydration system. HydraPak's Bite Valve Sheaths provide a soft bite and are made of durable silicone. Perfect for chewers or to keep in your emergency gear kit with your bandaids and duct tape. Fits and replaces all HydraPak bite valves on our Reservoirs, SoftFlasks, and UltraFlasks.Specifications-Weight: 5.7 g / 0.2 oz-Materials: POM, Silicone

Review: Great replacement part! - Works perfectly as a replacement on running Nathan hydroflask soft water bottle (mine had dirty over time and wouldn’t come clean). Can be easily taken apart to wash, and goes in the dishwasher. Way cheaper than buying a new bottle!
Review: Perfect replacement - Perfect for 500 ml hydrapak. Fits great no leaks. Broke the original valve while on a run and needed a replacement. A lot cheaper than buying a new bottle glad these are available.

## Features

- Silicone
- Imported
- SHEATH REPLACEMENT - Fits and replaces all HydraPak bite valves on our Reservoirs, SoftFlasks, and UltraFlasks.
- DURABLE SILICONE - Silicone sheaths are soft to bite and durable, include inner posts
- Sport type: Outdoor Lifestyle
- Item Package Weight: 5.7 grams

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08QF1S9PW |
| Best Sellers Rank | #113,004 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2,056 in Water Bottle Accessories |
| Bottom Shape | Round |
| Brand | HydraPak |
| Brand Name | HydraPak |
| Capacity | 5.67 g |
| Color | Clear |
| Customer Reviews | 4.8 4.8 out of 5 stars (574) |
| Date First Available | January 1, 2021 |
| Global Trade Identification Number | 00834456002543 |
| Included Components | 2 Replacement Sheaths |
| Item Dimensions LxWxH | 1 x 11.75 x 1 inches |
| Item Package Dimensions L x W x H | 3.62 x 2.64 x 0.87 inches |
| Item Weight | 5.7 Grams |
| Manufacturer | HydraPak |
| Material | Silicone |
| Model Name | Bite Valve Sheath 2-Pack |
| Model Year | 2021 |
| Number of Items | 2 |
| Package Weight | 0.02 Kilograms |
| Part Number | HYDX181 |
| Size | 2 Pack |
| Specification Met | Pom & Silicone Industry Standards |
| Sport Type | Camping & Hiking, Climbing, Outdoor Lifestyle, Running, Snow Skiing |
| Style | 2 Pack |
| Suggested Users | Unisex-Adult |
| UPC | 834456002543 |
| Warranty Description | Beyond Lifetime Warranty |

## Product Details

- **Bottom Shape:** Round
- **Brand:** HydraPak
- **Capacity:** 5.67 g
- **Material:** Silicone
- **Specification Met:** Pom & Silicone Industry Standards

## Images

![Bite Valve Replacement Sheath - for Hydration Reservoir Soft Flask - 2 Pack, Clear (A181) - Image 1](https://m.media-amazon.com/images/I/410mVidgYOL.jpg)

## Questions & Answers

**Q: will it work on the skyflask?**
A: It will work on the skyflask

**Q: Which piece does this replace exactly?**
A: This replaces the complete end piece of the hydration hose that you bite onto to drink- the product photo is exactly what you get.

**Q: is it compatible with osprey hydrapack?**
A: Yes, they’re the same. Also compatible with Klim and USWE hydra packs

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great replacement part!
*by K***Y on November 14, 2025*

Works perfectly as a replacement on running Nathan hydroflask soft water bottle (mine had dirty over time and wouldn’t come clean). Can be easily taken apart to wash, and goes in the dishwasher. Way cheaper than buying a new bottle!

### ⭐⭐⭐⭐⭐ Perfect replacement
*by M***L on July 25, 2025*

Perfect for 500 ml hydrapak. Fits great no leaks. Broke the original valve while on a run and needed a replacement. A lot cheaper than buying a new bottle glad these are available.

### ⭐⭐⭐⭐⭐ perfect size for outdated osprey valve
*by S***B on August 8, 2025*

This is a perfect replacement fit for my 10+ year old model osprey bite valve (the red one in the photo)!! Very happy. And it is of good quality materials, does not add any taste, and feels right.

## Frequently Bought Together

- Hydrapak Bite Valve Replacement Sheath - for Hydration Reservoir Soft Flask - 2 Pack, Clear (A181)
- HydraPak Comet Bite Valve
- HydraPak HydraFlex Tube - Lightweight Hydration Drink Tube

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**Shop now:** [https://www.desertcart.jp/products/324165357-bite-valve-replacement-sheath-for-hydration-reservoir-soft-flask-2](https://www.desertcart.jp/products/324165357-bite-valve-replacement-sheath-for-hydration-reservoir-soft-flask-2)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-11*