There are many different manufacturers that make this style wrap around and many of them we would describe as "flimsy" but these, these are bit different in person. They are very sturdy (i.e. "beefy") glasses - not heavy weight though just well made.
Shatterproof Polycarbonate Lenses,meets ANSI Z87.1+ UV400 Filter for Maximum UV Protection
Scratch Resistant Coating
Vibrant Neon Pink Temples
Clear Lenses or Gray Lens Sunglasses