These slipper socks feature grip soles to prevent falls while walking or running on slick surfaces, making them perfect for yoga or indoor activities. They're made of polyamide and nylon and come in black, with a length of 12cm for the upper tube and 21cm for the lower tube. The socks provide superb grip on wood floors and tile floors, and are a great companion for safer yoga practice and fall prevention. Manual measuring may result in a 1-3mm error, and the picture may not reflect the actual color of the item. Material: Polyamide fibre+NylonFeatures:- Prevent falling or losing balance while walking or running.- Super grips at sole of socks provide superb grip on slick surface such as wood floors,tile floors.- Perfect companion socks for your yoga, allows safer practice,fall prevention and enhances balance during exercise.Package included:1 x Pair of SocksNotes:1. Manual measuring, please allow 1 ~ 3mm error,thank you.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.