These designer prescription glasses are made to accommodate most prescription lenses.Made of Tech Alloy.Timberland TB5018 frames have a rectangle shape, which helps to balance rounded facial features. Frame shape is the most noticeable feature of a pair of glasses, followed by frame color and frame size. Top brands always have a large collection of rectangle frame shape glasses, as well as oval frame shape glasses.The frame has adjustable nosepads, a popular feature providing comfort and precision to any nose shape.Standard skull temples can be easily adjusted to fit perfectly behind your ears.2-year warranty. The warrantee by the manufacturer covers manufacturer's defects for the frame. As an online optical superstore, we can help to process a warrantee for you with the manufacturer, according to their return policy. See all Timberland Timberland Glasses Timberland glasses are designed by Timberland, which has a worldwide reputation for durability and reliability. Timberland is a subsidiary of VF Corporation, which brings us brands such as The North Face, JanSport, and Dickies. The Timberland eyewear collection is geared toward big glasses frame styles mostly for men, and the shapes are mostly angular and rectangular. Frame styles can be found in metals and plastics, in fully rimmed and semi-rimless designs, just like all Timberland eyewear. All Timberland glasses and most Timberland sunglasses can be customized with prescription lenses, just like all of our glasses.