--- product_id: 725231118 title: "WHOOP 5.0/MG SportFlex – Waterproof, Sweatproof Accessory | Silicone Band for Health, Fitness, & Wellness Wearable" brand: "whoop" price: "¥21668" currency: JPY in_stock: true reviews_count: 13 category: "Whoop" url: https://www.desertcart.jp/products/725231118-whoop-5-0-mg-sportflex-waterproof-sweatproof-accessory-silicone-band store_origin: JP region: Japan --- # 100% Waterproof Durable Sweatproof Silicone Breathable Ventilation WHOOP 5.0/MG SportFlex – Waterproof, Sweatproof Accessory | Silicone Band for Health, Fitness, & Wellness Wearable **Brand:** whoop **Price:** ¥21668 **Availability:** ✅ In Stock ## Summary > 💥 Elevate your fitness style with SportFlex – where durability meets comfort! ## Quick Answers - **What is this?** WHOOP 5.0/MG SportFlex – Waterproof, Sweatproof Accessory | Silicone Band for Health, Fitness, & Wellness Wearable by whoop - **How much does it cost?** ¥21668 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/725231118-whoop-5-0-mg-sportflex-waterproof-sweatproof-accessory-silicone-band) ## Best For - whoop enthusiasts ## Why This Product - Trusted whoop brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Soft-Touch Comfort:** Ultra-smooth silicone that’s hygienic, easy to clean, and gentle on your skin. - • **Custom Fit, All Day:** Adjustable closure with breathable ventilation for a secure, comfortable fit no matter the intensity. - • **Effortless Style Swap:** Fast Link slider lets you switch bands quickly to match your mood or look. - • **Seamless Compatibility:** Designed for WHOOP One and WHOOP Peak—upgrade your wellness game without compromise. - • **Unstoppable Performance:** Waterproof, sweatproof, and dirtproof for your toughest workouts and adventures. ## Overview SportFlex is a premium silicone band engineered for high-performance fitness and wellness wearables. Fully waterproof, sweatproof, and dirtproof, it features an adjustable, breathable design for all-day comfort and durability. Compatible with WHOOP One and WHOOP Peak, it includes a Fast Link slider for easy band swaps, making it the ultimate accessory for active professionals who demand style and resilience. ## Description Made with soft-touch silicone, SportFlex is waterproof, sweatproof, and dirtproof—built to take on high performance and water activities. Includes a Band, Hook, Clasp, and a Fast Link slider that makes swapping bands easier than ever. Compatible with WHOOP One and WHOOP Peak—membership not included. This is not compatible with the WHOOP 4.0. Review: Great product - The product is original whoop product and hence quality is visible. Hope that the color and the softness of the material remain unchanged throughout the journey and show value to the amount I paid for. It’s better to buy here such accessories to avoid delivery charge to whoop. The delivery was completely messed up by desertcart and it took 2 days for me to receive the item. Review: ممتاز - ممتازة ## Features - BUILT FOR HIGH PERFORMANCE – SportFlex is designed with waterproof, sweatproof, and dirtproof silicone. It’s highly durable and designed to withstand your most intense workouts and adventures. - MADE WITH SOFT-TOUCH SILICONE – SportFlex is ultra-smooth, hygienic, and easy to clean. Small scuffs can be wiped off, or you can deep-clean the band with isopropyl alcohol and a lint-free cloth followed by a water rinse. - ADJUSTABLE AND BREATHABLE – SportFlex is made with an adjustable closure system to ensure a snug, secure fit—no matter how intense your workout. The band includes ventilation details, making it extra breathable and comfortable. - 100% WATERPROOF – SportFlex is completely waterproof, making it an essential accessory for everything from swimming laps and surfing to high-sweat, high-intensity workouts. - COMPATIBILITY – This is not compatible with the WHOOP 4.0 ## Technical Specifications | Specification | Value | |---------------|-------| | Care instructions | Clean with isopropyl alcohol and a lint-free cloth, rinse with water. Wipe off small scuffs. Allow to air dry. | ## Images ![WHOOP 5.0/MG SportFlex – Waterproof, Sweatproof Accessory | Silicone Band for Health, Fitness, & Wellness Wearable - Image 1](https://m.media-amazon.com/images/I/519QTDFwyIL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product *by M***N on 13 November 2025* The product is original whoop product and hence quality is visible. Hope that the color and the softness of the material remain unchanged throughout the journey and show value to the amount I paid for. It’s better to buy here such accessories to avoid delivery charge to whoop. The delivery was completely messed up by Amazon and it took 2 days for me to receive the item. ### ⭐⭐⭐⭐⭐ ممتاز *by E***Y on 7 August 2026* ممتازة ### ⭐⭐⭐⭐⭐ اصلي *by M***D on 20 June 2026* جيد ## Frequently Bought Together - WHOOP 5.0/MG SportFlex – ECG Compatible, Waterproof, Sweatproof, Silicone Accessory for Health & Fitness Wearable - Not Compatible with Gen 4 - WHOOP 5.0/MG SuperKnit – ECG Compatible, Signature Performance Knit – Not Compatible with Gen 4 --- ## 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.jp/products/725231118-whoop-5-0-mg-sportflex-waterproof-sweatproof-accessory-silicone-band](https://www.desertcart.jp/products/725231118-whoop-5-0-mg-sportflex-waterproof-sweatproof-accessory-silicone-band) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-17*