The Clover Thimble is designed to protect your finger from accidental pokes with hand needles. This leather thimble has no seams or stitches, allowing the needle to be pushed from any angle, is sewn 3-dimensionally to fit the shape of your finger and has 2 layers of leather for increased safety. Details: Inner diameter approximately 17.5 mm (11/16") No seems or stitches allowing the needle to be pushed from any angle Sewn 3-dimensionally to fit the shape of your finger Two layers of leather for increased safety Packaging has a hole/size guide Cowhide