Superior quality genuine Calf Leather watch strap. classic styling. *Specially treated water resistant leather. Padded design Heavy duty 'rot-proof' thread/contrast stitching throughout. Fully genuine leather lined. Matt low sheen finish. No corners have been cut in the quality control, construction or testing departments during the manufacturing process. Equal or superior to most of the non 'oem' (original equipment manufacturer) replacement watchstraps of similar design and spec. retailing for significantly more and matches the construction standards set by brands (Tag Heuer, Breitling, Rolex, Omega). Anti-allergy tested, this watch strap contains no chemical or other skin irritants. Equal or superior to many replacement watchstraps of similar design and spec. (think Hirsch, Bros, Hadley Roma, Darlena etc.). In my opinion the SD give the construction standards set by many of the significantly more expensive branded straps a very close run for the money ! (think Breitling, Rolex, IWC, Tag Heuer, Omega etc.). Production samples of these straps are comprehensively 'destruction' tested by the manufacturer to ensure superior durability and wear characteristics. The SD is also sauna tested to ensure that these watchstraps' can withstand the heat and steam typically encountered in sauna conditions and tropical climates.