Tightening calf wraps (gaiters) reduce inflation of dry suit at the calf and foot while swimming in an appropriate position (with legs slightly above the body). Cordura 1100 Elastic ribbon 100 mm, velcro Gaiters are sized by diver's calf circumference at widest point, wearing street clothes Sizes: M - circumference of the wrap, no stretching applied - 38 cm (15 inches) L - circumference of the wrap, no stretching applied - 43 cm (17 inches) XL - circumference of the wrap, no stretching applied - 48 cm (19 inches) XXL - circumference of the wrap, no stretching applied - 53 cm (21 inches)