Notch Classic Adjustable Red Blank cap was designed to specifically meet the needs for a practical hat for firearms instructors as well as a hat for range instructors. This adjustable red range hat will work perfectly with your eye protection and/or sunglasses and help keep them perfectly in place! We also increased comfort by replacing the top button with a 1" x 1" velcro square! Features include:Patented Notch technologyWorks with virtually any style of glasses (SEE THE PERFECT FIT GUIDE)Rugged 100% cotton twill fabricBlank front, monochromatic logo on back right panelUnstructured low profile fitLow profile velcro strap Which notch location do you need? CLICK HEREWe offer our patented notches in two locations: Standard Notch and Terra Notch (named after our co-founder).The Standard Notch (pictured above) is designed to work with most wrap-around or sport style sunglasses, shooting glasses, and safety glasses. These styles have a curved appearance, designed to conform to the contour of the head.The Terra Notch is designed to work with most aviator or fashion style sunglasses as well as prescription eyewear. These styles are more squared off at the corners, causing the frame to sit further away from the face. Available sizes: One Size Fits Most Notch Adjustable Hat Size Chart