Sizes S (M, L) or 6 (7.25, 8.25)in. Foot Circumference - The pattern is written for beginners and advance crocheters alike! Use any light worsted/DK/Sport weight yarn you desire…just make sure your gauge is just about right. Do keep in mind that socks are meant to be worn tight to the foot with negative ease so a gauge that is a bit tighter is okay!