Watch Strap Silicone Band Rubber 16mm 18mm 20mm 22mm 24mm Sport Quick Release
Strap Width: 16mm,18mm, 20mm, 22mm, 24mm. To check the size you need to have a look at the back of your current strap for any stamp that would indicate the size this will often just be a number i.e. 20, which will indicate 20 mm.