Transparent plastic tough box,doesn't break easily and light weight,could store 25 machine bobbins at most, satisfied for a normal daily sewing using. Made of plastic material, light weight. Well made to last, perfect place to store your bobbin, ensure your crafts will be the best out of the rest. The bobbin box it is super easy to store different colors of thread, perfect for anyone just starting out with an embroidery machine or a sewing machine. Transparent and clear to see inside objects. Flap type cover design, easy to open and close. The craft storage container is great to keep beads, jewelry making supplies, embellishments and other craft supplies neat and organized.