The NYO adult life jacket features the newly developed NeoLite 3D material. This material has a similar look and properties to neoprene but is significantly lighter, more breathable, and feels pleasantly soft. The flexible buoyancy foam of the life jacket provides ample buoyancy as well as all-around impact protection. Large armholes ensure extended freedom of movement while paddleboarding, kayaking, wakeboarding, or jet skiing. Thanks to the two sturdy straps with snap buckles, you can perfectly adjust the lightweight neoprene buoyancy vest to your body, ensuring nothing slips. Simply secure the straps with the belt clips to prevent them from dangling. Choose the appropriate size based on your chest circumference: Sizes (Chest circumference, Body weight): XS (32-34 in, 66-110 lbs), S (34-36 in, 88-132 lbs), M (36-38 in, 110-154 lbs), L (38-40 in, 132-176 lbs), XL (40-44 in, 154 lbs and up), 2XL (44-47 in, 154 lbs and up), and 3XL (47-50 in, 154 lbs and up).