Lightest mesh ankle and top of foot for hot-weather comfort

And the fabric is Bluesign approved

MS 245-305

for trekking and hiking

BR 37 38 39 / 40 41 / 42 / 43 44 45  46 / EU 40 40

on performance mid sock w Color:white ivory Lightest mesh ankle and topThe running sock that balances a feeling of protection and performance. Comfort that keeps you going. The Performance Mid Sock W from delivers superior cushioning with targeted support. It offers full arch and ankle support and is crafted from breathable performance fabric to keep you cool during long runs. The special blend provides a balance of protection and performance for athletes. Regular. True to size.