Spear fishing takes concentration; unlike scuba diving a spear fisherman can't stop to adjust a loosening weight belt due to wet suit compression at depth. The Mares Marseilles Rubber Weight Belt allows the serious spear fisherman to snug up the belt at the surface and forget it while fishing. The Elastic Rubber Weight Belt is manufactured with a high stretch white rubber to keep your weights comfortably in proper position during ascents, descents and the white color for high visibility. The high elastic properties of the belt will contract and compress with your body and wetsuit during your descent and expand and stretch as your body and wetsuit expand during ascent keeping your weight belt properly positioned around your hips. The Marseilles buckle is made of heavy duty corrosion resistant stainless steel, is attached to the belt with stainless steel rivets and is designed for a quick release if necessary.