Innovative Scuba Concepts Innovative Scuba Snorkel Vest / Life Jacket for Floatation and Safety, Adults and Kids Sizes Vest is designed to add buoyancy while snorkeling without sacrificing comfort Made from durable 210 denier urethane-coated nylon for maximum durability Intuitive screw-down oral inflation mouthpiece (plastic) provides in-water inflation Adjustable straps deliver a customized fit, while over the neck style provides comfort Sizes are Kid (up to 100 pounds), Adult (100-190 pounds) and XL (190-230 pounds)