High-grade polyurethane rubber diver's watch strap in Black - Flexible yet robust NDL's (No Decompression Limits) printed near the 'watch' end of the strap Stainless steel buckle - non-allergic 22mm where it fixes to your watch (heavy duty spring bars supplied). Chunky design to suit the larger watch. Length when buckled on the last hole is 195mm / 7¾ inches. add this to the size of your watch and it gives the maximum wrist size the strap will fit