Insulites(TM) pouch uses premium Prim aloft(R) insulation, and reflective material to retain temperature. It is like a little sleeping bag to keep hot foods hot, or cold foods/drinks cold. Made with a durable non-woven fabric. Comes in Retail package. Size: 25cm x 25cm (10in x 10in). Compressible, folds/stuffs to a very small size. Ultra Light weight: 43g (1. 5oz).