Fluco UTC G10 18mm Brown Leather Watch Strap Imported Made in Germany by Fluco, a company founded in 1952 Ideal for military, sports, pilot/aviator or chronograph watches Ring and buckle pockets sewn into place and double-stitched at edges Soft and supple shrunken calfskin leather To determine your strap size, measure the distance (in millimeters) between the lugs of your watch