Full facepiece eyepieces, lenses and parts ensure optimal vision and eye protection. Spectacle kits include a spectacle assembly and holder, which allow workers to wear corrective lenses. The adjustable holder or suction cup facilitates position adjustments of the spectacle assembly. Lens covers protect lenses from damage due to scratches and overspray. Other full facepiece parts include replacement lenses, lens clamps, frames and retainers.