MYFIT Footies Low 1 mm are great little helpers to prevent blisters and pain during sports activities like inline skating, roller skating, and other sports where athletes' feet need to be protected especially also in the high-stress areas like ankles and Achilles tendon. Blisters are caused by friction, which means you have too much room in your boots or skates. Footies fill the empty space. Low-cut Footies are offered in three different thickness options: 1mm, 2mm, and 3mm thickness. Made from highly resistant SBR material sourced from Japan, Footies offer relief from high-pressure points on the foot. Flatlock stitching ensures a comfortable fit. Footies should be washed by hand only. These Footies come with 1mm thick material and low cut which is ideal to wear in low cut speedskates or roller derby skates.