SEAC weight vest is made of multi-function neoprene. Lovers of free diving and underwater fishing can use it as a weight-holding back pack. It features 6 internal pockets to hold as many as 1-kg weights. For greater comfort we recommend the use of 1 kg SEAC Soft weights. If Worn without weights, it Becomes A practical aid to relax during snorkelling activities and provide Extra safety for those who swim In open water thanks to its floating qualities. This vest can be hooked and Adjusted in 2 different positions depending on the needs: as a vest with double buckle or worn on the chest with a single buckle for Quicker release. SEAC weight vest is made of 5 mm neoprene. The lead pockets are lined with nylon fabric for Increased Strength. Available in Black and fluorescent orange for those Seeking greater Visibility in the water. (Warning: weights Not included).