Marinepool 100 N buoyancy through integral 12402 PE foam. Comfortable to wear and good freedom of movement due to the well designed separate buoyancy compartments. Integrated leg strap(s). Signal whistle. Padded collar for added comfort and support to the head. Robust zipper, adjustable waistbelt and tie cords at neck and hem. 3 reflex strips which reflect searchlights to a distance of 1.2 miles.