---
product_id: 263493620
title: "Sternum Strap Backpack Chest Harness for Backpack with 20MM or 25MM Webbing"
brand: "yyst"
price: "HK$185"
currency: HKD
in_stock: true
reviews_count: 6
category: "Yyst"
url: https://www.desertcart.hk/products/263493620-sternum-strap-backpack-chest-harness-for-backpack-with-20mm-25mm
store_origin: HK
region: Hong Kong
---

# Adjustable 23-45 cm fit 25MM ultra-strong webbing Elastic comfort stretch Sternum Strap Backpack Chest Harness for Backpack with 20MM or 25MM Webbing

**Brand:** yyst
**Price:** HK$185
**Availability:** ✅ In Stock

## Summary

> 🎒 Lock in comfort and control with YYST’s powerhouse sternum strap!

## Quick Answers

- **What is this?** Sternum Strap Backpack Chest Harness for Backpack with 20MM or 25MM Webbing by yyst
- **How much does it cost?** HK$185 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/263493620-sternum-strap-backpack-chest-harness-for-backpack-with-20mm-25mm)

## Best For

- yyst enthusiasts

## Why This Product

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

## Key Features

- • **Custom Fit Comfort:** Adjustable sternum strap from 9" to 17.5" (23-45 cm) for personalized support
- • **Pressure-Free Wear:** Integrated elastic section reduces chest pressure during extended use
- • **Effortless Stability:** Prevents shoulder straps from slipping, enhancing load balance and comfort
- • **Unmatched Durability:** 25MM webbing and buckle for superior strength over standard 20MM
- • **Universal Compatibility:** Fits most backpacks with 20MM or 25MM shoulder webbing seamlessly

## Overview

The YYST Sternum Strap Backpack Chest Harness is a robust, adjustable nylon strap designed to fit 20MM or 25MM webbing backpacks. Featuring a durable 25MM buckle and elasticized section, it ensures enhanced stability and comfort by preventing shoulder strap slippage and reducing chest pressure. Lightweight and easy to install, it’s the perfect upgrade for professionals seeking reliable support during daily commutes or outdoor adventures.

## Description

You are purchasing Nylon webbing Sternum Strap.

Review: Quality and Design - Excellent product and well suited to my requirement.
Review: Purchased to use on a Stihl 700 backpack blower. My shoulder straps were always falling off, this chest strap fixed that problem, easy to use and attach

## Features

- Quantity : 1 piece for one backpack . Color : black. NO BACKPACK. Backpack is just for display.
- 25MM Webbing - Our webbing is 25MM ,our buckle is also 25MM. More Stronger and more Durable than 20MM buckle.
- Suitable for webbing on the backpack up to 25MM. Exactly suitable for 3/4" Wide (20MM) or 1" Wide (25MM). Most of the webbing on the shoulder strap is 1"(25MM) wide.
- Adjustable - The sternum strap is adjustable . Please adjust it. Adjustable from 9" to 17.5" (23 CM to 45 CM).
- Elastic - One piece of elastic has been attached on the strap. You will not feel too much pressure on your chest.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07D3RGMNM |
| Batteries Included? | No |
| Best Sellers Rank | #76,290 in Sporting Goods ( See Top 100 in Sporting Goods ) #59 in Backpack Pack Straps |
| Brand | YYST |
| Color | black |
| Customer Reviews | 4.4 4.4 out of 5 stars (355) |
| Date First Available | 23 June 2018 |
| Is Discontinued By Manufacturer | No |
| Item model number | YYST-2 |
| Manufacturer | YYST |
| Material Type | Nylon Plastic buckle |
| Package Dimensions | 10.4 x 6.3 x 3.2 cm; 45.36 g |

## Images

![Sternum Strap Backpack Chest Harness for Backpack with 20MM or 25MM Webbing - Image 1](https://m.media-amazon.com/images/I/514ys683sCL.jpg)

## Questions & Answers

**Q: Is it stretchy or sturdy?**
A: It has been sturdy for me, not really stretchy. But easily adjusted to different lengths.

**Q: Is this strong enough to ruck 30+ lb? Is there any warranty if the buckle breaks?**
A: I would say it would work if your straps are thick on your pack (the straps that will slide in the buckles). The buckles that slide on my bag keep popping off because my webbing that I'm using on my bag is thinner than the plastic "slide on" buckles, so they keep popping off, it's pretty annoying.

**Q: How narrow can this be tightened?**
A: Not much less than 3 inches between backpack straps. The buckle itself takes up about 2 in

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality and Design
*by L***Z on 5 December 2022*

Excellent product and well suited to my requirement.

### ⭐⭐⭐⭐⭐ Review
*by R***B on 13 December 2024*

Purchased to use on a Stihl 700 backpack blower. My shoulder straps were always falling off, this chest strap fixed that problem, easy to use and attach

### ⭐⭐⭐⭐⭐ Review
*by C***L on 29 March 2023*

Great product. Excellent quality. Happy with it.

## Frequently Bought Together

- YYST Sternum Strap Backpack Chest Harness for Backpack with 20MM or 25MM Webbing
- Wisdompro Backpack Chest Strap, Heavy Duty Adjustable Backpack Sternum Strap Chest Belt with Quick Release Buckle

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**Shop now:** [https://www.desertcart.hk/products/263493620-sternum-strap-backpack-chest-harness-for-backpack-with-20mm-25mm](https://www.desertcart.hk/products/263493620-sternum-strap-backpack-chest-harness-for-backpack-with-20mm-25mm)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-04-23*