SIZE CHART: L: suitable for 45-55kg, for height 120-140cm, waist 33cm; XL:suitable for 55-60kg, for height 140-160cm, waist 34cm; 2XL:suitable for 60-70kg, for height 155-170cm, waist 36cm; 3XL:suitable for 70-77.5kg, for height 165-180cm, waist 38cm; 4XL:suitable for 77.5-85kg, for height 175-185cm, waist 40cm; 5XL:suitable for 85-92.5kg, for height 180-195cm, waist 42cm; Drawstring,Elastic Drawstring closure Swim Jammers for Men Chlorine resistant, more compression and stronger than traditional fabrics, lightweight but not translucent, allows absolute freedom of movement.85% polyester& 15% Spandex, Lining: 100% Polyester. Contrast side panels present a sleek look, front lined in crotch area provides extra coverage. Reinforced seams, fast drying fabric for a perfect shape and fit. Elastic drawstring waist for enhanced fit and security. If you are a competitive or experienced lap swimmer, you are going to be diving into the water, pushing off at full-force. Drawstrings are a necessity to keep your suit snug around your waist. UV protection. This means the swimsuit jammers will stand up to the sun and not fade prematurely. Particularly helpful for swimmers who have the luxury of training outdoors. These men's athletic swim jammers are great for swimming, fitness training, racing, surfing and other beach activities, professional swim jammer design allows you to show your skills in the water.