The Delta features a square shaped frame and larger lenses. This unisex frame is large enough to comfortably fit a mans face while offering a look that’s also desirable for women. A versatile look, the Delta offers the perfect combination of function and style. Delta keeps you looking good, whatever life throws at you.MILSPEC Ballistic, Lenses Meet MIL PRF 32432A, Clause 4.8.4 Ballistic Fragmentation Protection