The Mo-Fit Heart Rate Monitor Soft Strap Replacement from Engine Design Group is a premium quality replacement strap for most button snap (metal) type HRM module/ transmitters (ANT+, Bluetooth, 5.3kHz). Our strap is a universal replacement for Mo-Fit, Garmin, Polar H7, Wahoo Tickr, and Coospo HRM Transmitters with 45 mm (1.75") metal button snap spacing. Features: Comfortable, soft, ultralight, durable design. Compatible with Mo-Fit, Garmin, Polar H7, Wahoo Tickr, and Coospo HRM Transmitters with 45 mm (1.75") metal button snap spacing. NOT COMPATIBLE with: Myzone, Polar H10, Polar H9, Peloton and other transmitter/ modules with deep recessed button snaps. Corrosion resistant materials help provide extra durability, to help ensure a long life of trouble free use. Fully adjustable chest strap is easy to setup and use. Fine weave provides fitted comfort and firm elasticity retention over its lifetime. Strap adjusts from 28"-40” (71 x 102 cm) with a maximum stretch of 62” (157 cm) for M-XXL, and 21"-27" (53 x 70 cm) with a maximum stretch of 42” (107 cm) for XXS-S. Manufactured with durable, wear-resistant materials that won't break, crack or tear. (washable, but not for swimming).