Fit & Design Compression fit socks Strategic zone cushioning for support Seamless toe for extra comfort Specially spun yarn for durability Y-stitched heel Technology 15-20 MMHG Compression relieves aching legs with the circulation benefits of medium strength compression Honeycomb Arch Support System cradles the arch of the foot to provide firm and comfortable compression that prevents foot fatigue Additional Details Recommended care: machine wash cold, tumble dry low Bombas(R) donates 1 pair of socks for every pair purchased