Sindoror Extra Fine Insole - Medium Size features a Cambrelle fabric covering, a fabric fabric with antibacterial, absorbent and deodorizing properties, important characteristics to maintain foot hygiene. Thanks to its discharge zones, it prevents and relieves pain in the heels and metatarsals, avoiding hardness and calluses. It can be trimmed to adapt to your size. Average size - corresponds to size 39/42 (European measure of number of feet).