Adjustable temples with eyelets to attach to a neck lanyard. Dimensions: Frame Outer Diameter: 6. 125 Inch (mm). Frame Inner Diameter: 5. 5 Inch (mm). Frame Height: 2. 25 Inch (mm). Temple Adjustment Range: 0. 75 Inch (mm). Features: Works great in Labs, Classrooms or for Home Experiments! Adjustable Temples Red.
