2” Aireator Cuff & Full Padded Heel/Toe, Compression Arch, plus Coolmax Top Foot. Ideal for that full shoe feel with a seamless padded bottom. SOLE Technology means we paired our favorite Aireator Cuff to a Full Padded Seamless Foot that provides that industry leading sock for all high rep usage of running, hiking, walking & casual wear. All socks are designed and custom made right here in North Carolina.