IST Spearfishing Rubber Weight Belt, Stainless Steel Buckle Rubber weight belt in 3 sizes - WB15-1.5M (5') - WB15-1.3M (4'3") - WB18-1.8M (5'9") Designed for spearfishing or free diving, rubber belt self-compensates to the changes in the wetsuits thickness at different depth Sturdy stainless steel buckle Rubber belt is stretchy and self-adjusts to changes in wetsuits thickness at different depths For spearfishing and more, this pliable, expandable belt compensates to changes in your wetsuits thickness at different depths, and has a really sturdy stainless steel buckle