The Swallow OTG (over-the-glass) smoke lens sunglasses offer a comfortable fit while wearing your prescription glasses.  These dense foam padded fit overs provide superior protection from airborne debris.  The Swallow is great for work and for play as the fit overs meet ANSI standards for safety.  The shatterproof polycarbonate antifog lenses provide 100% UV protection from the harmful and debilitating rays of the sun.  The matte black frames of these OTG sunglasses are made of high quality nylon material. These sunglasses to wear over glasses include a microfiber cleaning/storage bag.