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 style buckle is made of heavy duty 300 series corrosion resistant stainless steel and is designed for a quick release if necessary. Belt length is 55" (139.7 cm) excluding the buckle. Easy to use and lasts a lifetime. Designed as one size fits all. Belt will accept hard block lead or soft pouch pocket.