Onyx Air Span Breeze Life Jacket, Purple, XS/SMAs you tighten the body straps, the inner mesh panel expands, providing air flow to your back and keeping you cooler while paddling and fishingLow profile front foam and sculpted upper back allows full range of motionThin back foam accommodates most canoe and kayak seatsShoulder adjustments with airprene comfort pads & shoulder webbing tuck awaysTwo large pockets with stretchable airprene panels accommodate necessary gear and allow drainage