Filmpor™ Fabric is a patented material from COTS, made with a special TPU film on the surface.
Different from normal fabric, the additional film forms a protective cover containing billions of microscopic pores which are smaller than a drop of water, but bigger than a molecule of vapor. Moreover, the rubber-like layer maintains flexible, durable and smooth touching against tears and scratch. Compounded with three layers, it is still light and thin.
For its multi-functional performance, COTS applies it for backpack, which is perfectly suitable for daily use or even outdoor adventure.