BARTON QUALITY: Top grain cowhide leather watch band with embossed alligator or crocodile styling. 316L surgical grade brushed steel buckle. SELECT PROPER WIDTH: Compatible with any traditional or smart watch that uses 16mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, or 24mm spring bars. Quick release spring bars are included with and integrated into the band, so it is important that your watch's lug width matches exactly. LUXURY STYLING: 2mm taper from watch head to buckle. 24mm strap uses 22mm buckle, 23mm strap uses 21mm buckle, 22mm strap uses 20mm buckle, 21mm strap uses 19mm buckle, 20mm uses 18mm buckle, 19mm strap uses 17mm buckle, 18mm uses 16mm buckle, and 16mm strap uses 14mm buckle. Padded for style and comfort. Total thickness is approximately 5mm near spring bar and 3mm near holes. OPTIMAL FIT: Approximately 8" total length when not attached to watch; Designed to fit wrists 5.75" to 8", but watch geometry also impacts fit. BARTON Watch Bands - Alligator Grain Quick Release Leather Straps feature integrated quick release spring bars and an ultra-smooth underside. Fabricated from hand selected top grain leather and 316 stainless steel. Quick release spring