The sportful gruppetto pro 12 socks are crafted from meryl skinlife bacteriostatic yarns engineered to offer outstanding breathability while preventing odours and the growth of bacteria designed with a compression cuff and midfoot band for a perfect fit the gruppetto pro cycling socks are complete with signature sportful branding features sportful gruppetto pro 12 socks meryl skinlife bacteriostatic yarns compression cuff and midfoot band tested by the pro team at tinkoff saxo 12