Lightweight and compact, it has a soft hypoallergenic silicone skirt, complete with double feathered edge seal that provides an excellent fit and high level of comfort even with prolonged use. A low volume masks with minimum eye-lens distance ensures excellent field of view in all directions. The strap buckles are revolving for instant adjustment. The silicone masks strap is a wide split strap design for even dispersion for increased fit and comfort. It has an easy-to-reach one-hand nose pocket for ear equalization which can be utilized even when wearing thick gloves. To protect the masks when not in use the focus comes with a hard plastic protective masks box. On the focus it is possible to install graduated optical lenses