Product Material: ABS.Color: white, yellow, red, blue, orange Function: No deformation, safe impact resistance, light, good electrical insulation, comfortable and breathable. Sizes: Adjustable Head sizes. It can prevent the neck from being hurt by sunlight. Innovative “baseball cap” shape to improve the vertical vision. Also tested for front back wearing, to reduce encumbrance. Foam sweatband and electrical insulation. Retro-reflective bands for high visibility day and night. Support customizing your logo.