Fox's lenses are specially shaped flat to have a wide field of view. The material is a combination of silicone and hypoallergenic thermoplastic rubber (TPR).
The two lenses are connected with an elastic nose bridge for a better fit on all faces. They have a clip for quick strap adjustment. They also have external UV protection and anti-scratch protection film, while internally they have anti-fog protection.
Finally, the product comes with packaging made of durable plastic, protecting it from any damages.