These four piece, three layer insoles begin with a durable, anti-microbial pad that wicks away moisture and refuses to let odor escape. It sits atop a 4mm high density moldable foam, that quickly takes on your foot shape. Below that we have incorporated a firm, supportive base layer to keep your arch and heel stable.... and you on your feet all day long! Imported Men's shoe sizes S(5-6.5), M(7.8.5), L(9-10.5), XL(11-12), XXL(13-14) and XXXL(15-16). Kenetrek Boots Kenetrek Supportive Insoles XXXL KE-XD289, 3XL