The standard 22mm silicon strap that Seiko used for the SNE537 (Street series). A comfortable and flexible strap, but not as soft as the new Turtle strap. It ha s a tough appearance, and the silicon keeper looks nice. The buckle is coated black (you can buy a 20mm stainless steel keeper here). This strap is 22mm between the lugs, 23,8mm against the watch case and tapers to 20mm at the buckle.
