Katrinkles Adjustable Sock Blockers are a fantastic tool for knitters who frequently wash and block socks. They are sold in a pair that you assemble and can adjust the leg, foot, and heel for the perfect fit! Adjustable Sock Blockers are made of birch wood and are laser etched with the WEBS logo. Katrinkles Adjustable Sock Blockers adjust from approximately women’s size 4 to women’s size 13. Note: Because they are made of a natural material, the appearance of each item may slightly vary.