This is a 1.2 denier synthetic material that has been permanently waterproofed. It makes fantastic tight bodies on dries past #28. Great hatch matching colours. Cube Colours:- White, Pale Yellow, Blue Dun, Mahogany Brown, Dark Tan, Tan, Brown, Rusty Brown, Caddis Green, Green Drake, Gray Olive, Olive, Brown Olive, Light Cahill, Cinnamon Caddis, Black, March Brown, Amber, Sulphur Orange, Adams Gray, Pale Morning Dun, Pale Evening Dun, Golden Olive, Blue Wing Olive, Callibaetis, Hendrickson Pink, Sulphur Yellow, Fl.Chartreuse, Red Midge, Blue Damsel.