Max - Ultralight Tech DenimThe Ultralight Tech Denim is a 5. 5oz indigo dyed Japanese typewriter cloth with remarkable strength to weight properties. Typewriter cloths are densely woven materials using exceptionally fine yarns. This gives the fabric an incredibly smooth surface texture. To give the fabric strength and durability 23% nylon was added. Since nylon lacks the natural stretch that cotton has, its recommended that these jeans be worn with a little bit of extra room.