Adjustable rubber nose pads 100% UV protection Shatter-resistant, scratch-resistant polycarbonate lenses If you find your glasses falling off your head frequently, then let's introduce you to the Bobster Stella. The lightweight frame and adjustable rubber nose pads are uniquely designed to maintain a secure, comfortable fit throughout all types of physical activities. The polycarbonate lenses are scratch-resistant, shatter-resistant, and provide 100% UV protection.