Sellstrom X35 Series Flip Up Protective Eyewear Safety Glasses These X35 Safety Glasses feature a clean lens, flip-up shade 5 lens, and black frame, sold with 12 per box. The polycarbonate frame has temple arms molded with side shields for maximum protection. Unique spring loaded flip-up window has a hard coated Shade 5 IR lens; Ideal for light cutting, grinding, brazing operations. . Pack of 1