The Tri-Fold Circular Needle Case allows multiple needles to be stored in each pocket. It's labeled pockets range from size 2 US (2.75 mm) to 15 US (10 mm), but you also get five unlabeled pockets for any extras you may have! This case also includes two zip pockets to store notions away. With all of the storage possibilities, it's no wonder that the Tri-Fold Circular Needle case is one of Della Q's most popular needle cases!