Fins: High quality and stylish looking. Lightweight for east of travel. Open heel design. Soft rubber foot pocket for comfortable fit with either socks or barefoot. Easy adjust strap with release buttons. Men's USA Size (Shoes): S/M(5-8.5 ), ML/XL(9-13) Women's USA Size (Shoes): S/M(6-9.5), ML/XL(10-14) Purge Mask: Patented single lens with Edgeless technology on sides, which increases field of vision dramatically. Patented purge design. Patented channeled skirt design directs bubbles away from view. Ideal for medium to large faces. Crystal, liquid silicone injected skirt and strap. Double skirt edge comfort seal. Low volume. Swivel and adjustable buckles. Tempered glasses. Made in Thailand. Dry Snorkel w/ Signal Whistle: A unique, 100% absolute dry design -- Patented upper valve keeps water from entering the snorkel. Allows air to easily enter snorkel for clean and unobstructed breathing. Specially designed cover guards against water splashing into the snorkel. When the dry snorkel is submerged in water, the patented hinged seal reacts to seal the snorkel, preventing water from entering. As you surface, the hinged seal swings open allowing air to enter. Built-in whistle housing. Quick slip-in snorkel keeper. Pre-curved flexible silicone corrugated low section. Easy purge valve keeps stocking water out. Pre-curved silicone mouthpiece, prevents jaw fatigue. Silicone purge valve for easy draining.