The Furla SFU509 eyeglasses are the result of passionate craftsmanship that is executed by ground-breaking technology. They are made from the finest Acetate , making them light, durable, and comfortable when worn. They are hypoallergenic as well. Cat Eye and Full Rim , these Furla sunglasses feature non-slip temples and integrated nose pads for stability while the high-end optical hinges will provide a nice fit. The Grey are made from CR39 for durability. They can protect you from 100% UV rays.