Duraflex is a soft, transparent, pliable thermoplastic that combines comfort, durability, and strength. Suitable for both adult and pediatric devices, Duraflex is extremely strong but also very soft. It can be formed at a much lower temperature than typical thermoplastics, with little or no vacuum. Duraflex bonds well (is permanent) and is crack resistant, hygienic, and nontoxic. It does not lose its memory after cooling. Duraflex comes in thicknesses of 2.25 mm (3/32 in), 3 mm (1/8 in), 5 mm (3/16 in), 6 mm (1/4 in), 9 mm (3/8 in), 12 mm (1/2 in), and 15 mm (5/8 in) in a variety of sheet sizes.