WOUKUP QUICK RELEASE LEATHER WATCH BANDSAbout band material:this woukup leather watch bands is made of suede leather, the same leather is used on both the front and back. The buckle is made of 316 stainless steel, which is durable and corrosion-resistant.The graininess of the leather that can be touched is the characteristic of suede watch bands. The thickness of this strap is 4.1mm, it will make people feel that this is a hard and comfortable strap.About size: 20mm strap buckle width: 18mm, 22mm strap buckle width: 20mmBand length: long part-125mm, short part-78mm(without buckle), Designed to fit wrists 5.7" to 7.67"