Body Glove Adult Premium Silicone Series (S-M 4 1/2 - 8 1/2) Snorkeling Set Premium Silicone Adult Snokeling Set S-M (4 1/2 - 8 1/2) 3 material composite blade for flexibility and longevity. High efficiency channel system designed to maximize thrust and minimize fatigue 100% submersible dry snorkel. Safety Whistle. Nose purge system. Quick adjusting mask strap Patended silicone 4-window mask Over the shoulder carrying strap with soft pad