Stay Safe & Comfortable When Working Around Dust Ellipse respirators from GVS are compact, lightweight and have a flexible design that adapts and fits perfectly to the face and offers a full range of vision without interfering with other eye or ear protections that users choose to wear. A large central non-return valve allows for a reduction of breathing resistance for the user and keeps moisture build-up inside the mask to a minimum. The lightweight, non-slip strap is easily adjusted in 4 positions for improved comfort and to allow safe use even in high humidity or wet conditions. We offer both the Elipse (dust mask) and the Elipse Integra (dust mask with goggles). Both are available in 2 sizes. The small/medium mask is the appropriate size for 70-80% of people. The medium/large mask is for people with a slightly larger head or elongated face. We recommend you use the Mask Size Guide attached below. The interchangeable P100 filters included with the masks have a minimum efficiency of 99.97% for 0.3 microns and a breathing resistance of 3 mbars at a flow rate of 47.5 The lens on the Elipse Integra is designed in Polycarbonate and can withstand 120 m per second impacts. The coating applied meets (N) Anti Fog and exceeds the standard (K) anti-scratch coating seen on the market for longer durability.