SPECIFICATIONUpper Layer: Genuine Buffalo CalfskinLower Layer: Softglove leather liningWater resistance: Splash resistantWarranty: 12 months WHAT'S INCLUDED ×1 Hirsch Boston watch strap ×1 Hirsch H-Standard Buckle ×2 Loops/Keepers ×2 Fitted Quick-Release Spring Bars STRAP SIZE GUIDE Watch End Buckle End Thickness(Watch End) Thickness(Buckle End) Length 12mm 10mm 2.7mm 2.0mm M 14mm 12mm 3.1mm 2.0mm M 16mm 14mm 3.5mm 2.5mm M 18mm 16mm 4.0mm 2.5mm M, L 20mm 18mm 4.4mm 2.5mm M, L 22mm 20mm 4.9mm 3.0mm M, L 24mm 22mm 5.3mm 3.0mm L Length 'M' is equal to 110mm/70mm (180mm overall)Length 'L' is equal to 120mm/80mm (200mm overall) OPTIONAL DEPLOYMENT CLASPS Using the menu above, you can optionally add a Hirsch Sport deployment clasp to your purchase (for compatible straps) in a either silver or gold tone. Additional costs as indicated. A deployment clasp adds quick-release functionality to your watch strap for added convenience. Hirsch Boston Buffalo Calf Leather Watch Strap This Hirsch strap features an integrated quick-release spring-bar, allowing you to quickly and easily swap it out without the need for additional tools. Click here if you'd prefer this strap equipped with a pair of standard spring bars instead. A pleasingly rustic watch strap with a natural and rugged appearance, the Boston strap from Hirsch bears the intricate texture of genuine buffalo calfskin and features substantial curved padding and a contrasting backstitched seam. Substantial, comfortable and exceptional value for money. Please note: Any watches pictured are for illustration purposes only and are not included. Straps may vary slightly from those pictured.