The choice of frame material is essential, because tennis sunglasses must have certain requirements to be performing and at the same time comfortable and practical. Our frames are in TR90 or anticrash polycarbonate. TR90 is a special composition of Nylon and Carbon fiber which is 20% lighter than conventional materials and much more resistant to impact and mechanical traction. Inside the temples there is the Grip section in hypoallergenic rubber which prevents all those annoying microscriptions of the glasses towards the tip of the nose, which entail a waste of time and concentration for the athlete. All glasses are designed and created to be enveloping and soft, avoiding that annoying tight feeling that distracts the athlete from the game.