●✅COMPATIBLE WITH MOST HEART RATE MONITOR CHEST STRAPS: Designe as a replacement chest strap for Garmin HRM-Dual/Wahoo Tickr (1st & 2nd Gen)/Polar H7/Moofit/Powr Labs/COOSPO/XOSS. ●❌NOT Compatible:Polar H9 & H10, MyZone, Peloton, Garmin Tri, Wahoo Tickr (2020 3rd Gen), Please find COOSPO support if the strap not fit your heart rate monitor sensor. we will happy refund your order! ●Washing instructions: For hand wash only, and rinse with clear water. ●Content: The package not including a HR sensor, only a replacement soft chest strap.