Fit & Design: Thin temples fit great under a hat Spring hinges allow for flexibility in fit Top and side shields to help keep the light out Hydrolite(R) nose pads and temple tips to help you bring fish in Vented, textured and adjustable nose pads provide grip, comfort adjustability and allows airflow to help reduce fogging Top Shields/hooding minimize light leak Rubber side shields help block backside light leak Double injected hydrolite on interior and bottom of temples provide comfort and grip California Proposition 65