National Geographic Snorkeler Tuna 4 S Combo, Blue 2086 Made from 100 percent hypoallergenic silicone Lenses are CE tempered for safe distortion free clarity Frame- Lightweight Derlin and plastic Mouthpiece has an orthodontic design for an optimal fit Feathered edge mask skirt National Geographic Snorkeler"Experience" Masks & Snorkel Set. 100% Silicone , Hypoallergenic mask - Toucan Yellow Mask Strap-flexible and replaceable with - 3 point hold. Ratchet Quick lock (RQL)- mask strap adjustment Mask Skirt-feathered edge seal. Semi Dry Marlin Snorkel with Splash Guard. Wide Breath tube for comfort and ease of breathing and air displacement. Silicone Mouthpiece (orthodontic design for maximum comfort) Patented "Pinch & Lock" Snorkel Tab; East to attach and secure to your mask