Square; Your Caddis frames come nestled on top of a soft, custom-designed microfiber bag for storage.; Frame Width 145.0 - Lens Height 21.0 - Lens Width 49.0; Lens: 49 mm; Bridge: 21 mm; Arm: 145 mm; Includes microfiber cleaning bag; Premium, bio-based acetate frame with 3-barrel industrial hinges; Manufacturer's one-year limited warranty; Acetate / Metal / CR39 Casted Plastic; Imported