The Glossop CP consists of 100% TPU membrane, with one shiny side and one matte side. Girmo CP is also made of 100% TPU membrane, both sides are matte.

TPU (Thermoplastic Polyurethane) is a component of TPE (Thermoplastic Elastomer). TPU has a long list of excellent material properties. It is abrasion resistant, tear resistant, has excellent bending and tensile strength, large elongation break, low temperature resistance, low long-term deformation rate, and is resistant to chemicals, ozone, oxygen, oil, and fuel.