Protect your T-2 lenses"" and keep them clear of rain"" snow"" mud"" or dust. The iO cover has integral lens covers and a protective armor body that can't fall off or get lost. Low profile design allows covers to be quickly operated with one hand. Covers nest together so they don't flop under recoil. Receptive to most spray paints and hydro dip processes. Fits Aimpoint(TM) T-2/H-2 Optics.