The Radius FC Fototec Sunglasses Frame is made of Grilamid TR-90, a homo-polyamide nylon characterized by an extremely high alternative bending strength, low density, and high resistance to chemical and UV damage. The Radius has hydrophilic rubber ear and nose pieces for a no-slip fit. The sunglasses weigh 0.85 oz. (24 g). Sunglasses have adjustable ear pieces for a customizable, comfortable fit. The Tifosi Podium Sunglasses fit small, medium to large faces. Tifosi Sunglasses come with a storage bag and case.