63 SLOTS BOBBIN HOLDER - hold the bobbins securely so the threads dont tangle. The bobbin is still easy to pick up from the box. Keeps your bobbins stay neat. PRODUCT SIZE: 6.6*1.6*8.3 inches. SLOT SIZE: 0.75*0.3 inches.Note: Wider spools may require effort to insert or remove ZIPPER CLOSED- NO WORRIED CLASP FLIMSY - Handy, functional. premium engineering, sealed with a solid zipper and tactile materials. BOBBINS FITS SNUGLY - worry about the bobbins falling out, The bobbin holes are surrounded by foam so your thread will stay wound and no need to get a thread-clip. They also stay snug in the holes so you can pick your thread color easily. NO TANGLE WITH BOBBINS HOLDER - holds each bobbin securely, so that no threads accidentally unwind, no bobbins fall out if accidentally dropped, and no threads get messy or loose around the bobbin. MADE-TO-MEASURE BOBINS CASE - Tailor engineered to snugly hold the bobbins. without worrying about dirt, dust, splashes, bumps, or scratches.