This Spool Case from Superior is made of soft, durable plastic (like Tupperware). It is a dual-sided storage container with a convenient carrying handle. Holds 48 spools (24 per side). Dimensions: 13" x 10" x 3.5". Each slot is 3.25" x 1.6" so there is enough room for our standard spool of thread and a couple bobbins to keep with it. This case is the perfect size for the large Aurifil spools. Sorry, thread not included.