Adventurer swim set Mask & Snorkel. Make your underwater adventures come to life with the adventure swim set. This advanced mask and snorkel enables you to see underwater and breathe on the surface without taking your face out of the water. Comes with everything you need to get started and have fun. Includes stylish single window with polycarbonate lens for safety, soft hypoallergenic facial skirt, soft flexible mouthpiece. Comes in one size which fits almost every head.