• Comfortable, water-tight seal• Rich inhalation through 2 breathers• Ideal length of breathers for optimal air inhalation• Direct exhalation through a central valve at mouth level to expel the dioxide• 180° field of vision without distortions• Fixed socket for the action base cameraFrame: PolycarbonateBody: Reinforced silicone\nSize: S/M, L/XL\nCrystal: PolycarbonateStrap: Elastic strap