--- product_id: 443101150 title: "Myzone Replacement & Extension Chest Straps – Adjustable Straps for, MZ-Max & MZ-3 (Small , Medium & Extender Options" brand: "myzone" price: "£22.87" currency: GBP in_stock: true reviews_count: 13 category: "Myzone" url: https://www.desertcart.co.uk/products/443101150-myzone-replacement-and-extension-chest-straps-adjustable-straps-for-mz store_origin: GB region: United Kingdom --- # Lightweight 20g comfort Adjustable fit 21.25-34.6 in Durable polyamide material Myzone Replacement & Extension Chest Straps – Adjustable Straps for, MZ-Max & MZ-3 (Small , Medium & Extender Options **Brand:** myzone **Price:** £22.87 **Availability:** ✅ In Stock ## Summary > 🎯 Stay on track with the strap that keeps pace with your grind! ## Quick Answers - **What is this?** Myzone Replacement & Extension Chest Straps – Adjustable Straps for, MZ-Max & MZ-3 (Small , Medium & Extender Options by myzone - **How much does it cost?** £22.87 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/443101150-myzone-replacement-and-extension-chest-straps-adjustable-straps-for-mz) ## Best For - myzone enthusiasts ## Why This Product - Trusted myzone brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Light as Air:** Weighing only 20 grams, this strap stays barely noticeable so you can focus on your workout, not your gear. - • **Built to Last:** Crafted from premium polyamide, it resists sweat and odor buildup, maintaining freshness longer between washes. - • **Genuine Myzone Quality:** Official replacement strap guarantees seamless compatibility and reliable performance with your MZ-Max & MZ-3 monitors. - • **Backup Your Performance:** Keep a spare on hand to avoid downtime—because your fitness momentum waits for no one. - • **Perfect Fit, Every Time:** Adjustable sizing from small to medium with extender options ensures a snug, personalized fit for all-day wear. ## Overview The Myzone Replacement & Extension Chest Straps offer adjustable sizing from 21.25 to 34.6 inches, crafted from durable polyamide for sweat resistance and long-lasting comfort. Lightweight at just 20 grams, these genuine Myzone straps ensure perfect compatibility with MZ-Max and MZ-3 heart rate monitors, making them an essential backup for serious fitness enthusiasts. ## Description Adjustable replacement strap for the MZ-3 or the MZ-Switch Physical Activity Belt. Standard (M) 24.4 to 34.6 inches, Small (S) 21.25 to 27.6 inches or Strap extender PLEASE ENSURE YOU CHOOSE THE CORRECT REPLACEMENT STRAP FOR YOUR MONITOR Review: Genuine Brand Name replacement option - I was thankful to find this replacement strap available on desertcart for my MyZone heart rate monitor. I usually buy them from the MyZone website periodically, but standard shipping takes a while. It's genuine, and works perfectly. This is my 3rd replacement belt in 5 years of near daily use. The quality holds up for a long time. The elastic does begin to give towards the end of its lifespan but since it's adjustable, it's never a problem in getting the right fit. It also takes a long time before it begins to latch on to body sweat/odor. Definitely follow the directives in washing the belt in the sink after every use with warm water, and gently wring it out and air dry. And wash often in the laundry. I usually wash it between 1-2 times a week. Eventually as the belt ages, even soaking it in concentrated detergent/solution won't fully remove the understandable (at least in my experience) and totally normal odor that comes with the build up of sweat after long term use. So I do try to have 2 belts on hand at all times to alternate between through the week. If you need a replacement belt for your compatible heart rate monitor by MyZone, definitely go for it in buying it here. And buy two while you are at it. Review: Great replacement strap! - Original strap that came with my monitor finally snapped. This replacement worked great. ## Features - CONVENIENT: Lost your belt, or just need a spare? This adjustable replacement strap for the MZ-3 will get you back on track. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09TPW441D | | Best Sellers Rank | #34,477 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #88 in Exercise Straps | | Brand Name | MYZONE | | Color | Medium | | Customer Reviews | 4.6 out of 5 stars 825 Reviews | | Included Components | not | | Item Type Name | Watch Strap | | Item Weight | 20 Grams | | Item type name | Watch Strap | | Manufacturer | Myzone | | Material | Polyamide | | Number of Items | 1 | | Part Number | STSCH0M0RD00 | | Size | Medium | | Style | Extension | | Unit Count | 1.0 Count | ## Images ![Myzone Replacement & Extension Chest Straps – Adjustable Straps for, MZ-Max & MZ-3 (Small , Medium & Extender Options - Image 1](https://m.media-amazon.com/images/I/51b4IIHJlGL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Does this work with the myzone® mz-1?** A: Yes, it works with both My Zone 1 or My Zone 3. The belt is universal. **Q: Will this fit an arm or wrist?** A: The Myzone MZ-3 Replacement Strap (Small) is a chest strap only for use with the Myzone MZ-3 module and will not fit an arm or wrist. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Genuine Brand Name replacement option *by J***T on April 10, 2024* I was thankful to find this replacement strap available on Amazon for my MyZone heart rate monitor. I usually buy them from the MyZone website periodically, but standard shipping takes a while. It's genuine, and works perfectly. This is my 3rd replacement belt in 5 years of near daily use. The quality holds up for a long time. The elastic does begin to give towards the end of its lifespan but since it's adjustable, it's never a problem in getting the right fit. It also takes a long time before it begins to latch on to body sweat/odor. Definitely follow the directives in washing the belt in the sink after every use with warm water, and gently wring it out and air dry. And wash often in the laundry. I usually wash it between 1-2 times a week. Eventually as the belt ages, even soaking it in concentrated detergent/solution won't fully remove the understandable (at least in my experience) and totally normal odor that comes with the build up of sweat after long term use. So I do try to have 2 belts on hand at all times to alternate between through the week. If you need a replacement belt for your compatible heart rate monitor by MyZone, definitely go for it in buying it here. And buy two while you are at it. ### ⭐⭐⭐⭐⭐ Great replacement strap! *by J***H on September 5, 2025* Original strap that came with my monitor finally snapped. This replacement worked great. ### ⭐⭐⭐⭐⭐ Perfect *by J***M on June 12, 2025* I've had my monitor for about 2.5 years and recently it has started to not record here and there during my workouts. I thought maybe it was time to replace it, but read a couple of reviews about switching out the band and decided to try that first. I have used my new band several times now and it works like it is new. No more issues with recording my workouts. ## Frequently Bought Together - MYZONE MZ-3 Replacement Strap (Medium) - MYZONE MZ-3 Physical Activity Chest Strap Heart Rate Monitor - Fitness & Activity Tracker --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/443101150-myzone-replacement-and-extension-chest-straps-adjustable-straps-for-mz](https://www.desertcart.co.uk/products/443101150-myzone-replacement-and-extension-chest-straps-adjustable-straps-for-mz) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-01*