Have a lightweight design which provides a comfortable fit. Rubber tipped temples and a soft rubber nose piece gives this glass a secure fit for all day wear. IQuity[TM] intelligent semi-permanent anti-fog and anti-scratch hydrophilic coating that lasts longer than hydrophobic coatings. Environmentally friendly, non-toxic and non-flammable unlike highly toxic solvent-based coatings. Water washable up to 20 times more than hydrophobic anti-fog glasses. Rubber tipped temples provide a secure fit. Soft, rubber nose piece provides all day comfort.