Totally 3 kinds of sizes for choose:
14mm,16mm?24mm in width, you can choose the watch strap according to your original watch strap's width, the width determines the compatibility.
14mm watch strap compatible with: Hybrid Smartwatch Jacqueline/Skagen-SKW2692/Tone Slim Classic Watch/Casio DW290-1v
16mm watch strap compatible with: Hybrid Smartwatch Carlie/Skagen-SKW2765/Tissot seastar 2000/Huawei talkband B6/B3/Ironman Classic/Casio DW5600/Citizen GA1058
24mm watch strap compatible with: Suunto 9/9 Baro/7/D5/Spartan Sport/Spartan Sport Wrist HR Baro/9 Titanium/Fossil Hybrid Smartwatch HR Latitude/Casio GMa-s2100/Casio g shock ga2100/Tissot chronograph