The whole entire sock is elastic with an elastic Velcro strap. Sizes XS-S-M-L-XL Circumference / Length XS: 120-200 mm/260 mm S: 160-240 mm/260 mm M: 170-250 mm / 260 mm L: 180-260 mm/265 mm XL: 200-280 mm/275 mm

The whole entire sock is elastic with two elastic Velcro strap. It becomes less elastic due to silicone dipping Size: XS - S-M - L - XL An incredibly strong bootie for dryland Circumference: XS: 120-150 mm S : 150-170 mm M: 160-180 mm L: 170-190 mm XL: 190-210 mm