This lunch bag is made from 100% recycled cotton fiber. The VELCROŽ closure is sewn across the full length of the top of the lunch sack, and a looped heavy weight cotton string attaches at the corner. Made from natural unbleached cotton, meant to be used over and over again, and is machine washable. Colorfast markers can be used by kids to personalize the fabric. 10 1/2" tall x 7" wide with a 4 1/2" flat gusset bottom.