Trail running socks - T-Free® Trail orange/grey 3Feet Mid but you can certainly use

but you can certainly use the insole without having it customised

A gel padding at the heel

The 2 anti-slip grip strips will reduce movement in your shoe and thus reduce friction

it is comfortable

Trail running socks - T-Free® Trail orange/grey 3Feet Mid but you can certainly useT Free Technology for Natural Movement In running, the big toe is crucial for balance, alignment and propulsion. That's why we have developed T Free technology in collaboration with athletes such as Jonathan Albon. This technology allows the big toe to move freely and independently, improving your comfort and stability when road running. The socks incorporate all the innovations expected for trail running. The left foot right foot anatomical