Are you curious about the different parts that make up your glasses or sunglasses? You’re in the right place! Continue reading to learn the definitions of sunglasses-relevant words and phrases and to find a detailed diagram of eyeglass anatomy. You’ll be a sunglass expert before you know it.

 1. End Piece: Portion of the frame that extends outward from the lenses and connects to the temples.

2. Rim: Front portion of the sunglass frame into which the lenses are inserted.

3. Pad Arm: The attachment that holds the plastic nose pad in place, while allowing room for adjustment, so the glasses may conform to the wearer’s nose. Most commonly found on metal frames.

4. Nose Pad: Pieces that help keep the sunglasses in the proper position on the wearer’s face. Designed for comfort and a snug fit, it can be attached directly to the frame or the pad arm. Most commonly found on metal and sports frames.

5. Bridge: The area that arches up over the nose between the lenses. It is designed to support the majority of the glasses’ weight.

6. Top Bar/Brow Bar: Commonly known as a “brow bar,” and a popular feature on aviator sunglasses, the top bar runs across the top of the bridge between the two lenses to provide extra support. The top bar/brow bar is not present on all sunglasses.

7. Lens: Plastic or polycarbonate material through which the wearer can see.

8. Screw: Tiny metal fastener found at the hinge that connects the temples to the end piece. Screws can also be used on the frame to hold the nose pads in place or as an accent on the bridge.

9. Hinge: Connects the end piece to the temple and allows the temple to fold inward. Some hinges, called spring hinges, allow for hyperextension of the temple for a better fit.

10. Temple: Often called the arm, this is the piece of the frame that extends over the ear to help hold the sunglasses in place.

11. Temple Tips/Earpieces: Oftentimes this is a plastic coating that covers the portion of the temple that rests on top of the ear. The earpiece provides added comfort to the wearer and is common among glasses with metal frames.

Now that you’re familiar with the components that make up your sunglasses, it’s time to start shopping for your perfect shades. And we know just where you can find ’em!