A na-eji ugogbe anya maka anwụ mee ihe dị elu nke plastik, nke na-eme ka nhazi ahụ dịkwuo elu na ọdịdị ọdịdị nke akụkụ atọ, na-ewepụta àgwà ọma na àgwà pụrụ iche nke ụmụ nwanyị.The metal frame na-mere nke elu nickel alloy, nke e ji mara mma elasticity, elu hardness, ike ịgbado ọkụ ebe, ezi anwụ ngwa ngwa, na mkpa etiti ahịrị, nke kwesịrị ekwesị maka na-emekarị.
A na-ewetara gị ugogbe anya maka anwụ ndị a ejiri nlezianya mee nke ọma, na site n'ịmụta nka nka pụrụ iche, a na-enye nchịkọta anya anya mara mma na ụdị mma.