The TWF short sleeve rash vest provides constant UPF protection & features a high collar to keep the sun off your neck. Wear the rash vest under a wetsuit to give added comfort and protection against irritation. Used with a wetsuit, the rash vest also adds a layer of insulation to help keep you warmer in the water for longer. They are made from highstretch elastane for breathability & have been constructed with Raglan sleeves to reduce seams & increase protection. The rash vests come in unisex sizes.