Curved end two piece watch straps made from silicone rubber with pins and stainless steel buckle. These straps are curved at the connecting ends to give a closer fit to the watch case. Important note. These are curved ends and will fit many standard fit watches (70-80%) with a curved case that match the lug to lug width. It is not possible to list which watches are compatible and which are not. If you order one and find that it is not a suitable fit I will refund in full on return. The return postage will be the responsibility of the buyer. Waterproof and easy to clean so perfect for swimming and wearing to the gym. .