Knitter's Pride Astra Medium Astra Sock Blocker; measures 15" x 8.5" (38 cm x 22cm) 800117 Set of 2 sock blockers measuring approximately 15" x 8.5", ideal for men US sizes 6-7.5 and women US sizes 7.5-9 Made of eco-friendly Natural/Cellulose plastic acetate Fully biodegradable comes from renewable resources Fun Look; all blockers carry stripe patterns in dual color tones Natural soft feel; very sturdy and flexible