Our Cambridge VII Quick Release bands feature worsted spun merino wool for durability with a high-quality calfskin leather backing that is perfectly comfortable right out of the bag. Each band measures a standard 120/80mm long and 2.5mm thick creating a low profile that works well with most dressier watches. The stitching is tight and straight, and every aspect of the straps are meticulously tailored to SING on simple three-handed dress watches. The cleaner the dial the more fun you can have with these straps. Swap with Ease: Free set of integrated quick releasespring bars included Color:Tan solid weave effect Material: High-Quality Calfskin, Huddersfield Worstedspun Merino wool Buckle: Polished Stainless Steel Thickness: 2.8mm thick along the entire length Length: Approximately 120mm/80mm in length. Fitswrists up to 8inches Width: Apple watch 38/40/41MM, Apple watch42/44/45/49MM Additional resources: Fitting Guide | FAQ l ReturnsCommon smartwatch widths are listed here The handcrafted strap comes with a simple "easychange" spring bar system allowing the owner tochange the strap without tools within seconds.