Snorkeling Vest (Adult) Model Number: SV-4500 The SV-4500 and SV-2500 snorkeling vests provide just enough buoyancy, safety and comfort for an extended day of snorkeling without fatigue. The SV-4500 is adult size and the SV-2500 is sized for juniors. Easy to deflate or inflate in the water, or on land to roll up for compact storage during travel. FEATURES > One size fits all front mount (Horse collar) > Buoyancy: 23.0 lbs / 10.4 kg > High-visibility yellow air cell > Quick-release buckles on back and crotch snap > 6" inflator valve for easy operation > Compact for easy storage during travel