Safety Bump Cap Baseball Hat Style Lightweight Head Protection, Classic Black cotton Imported High-Density ABS Insert:Removable high-density ABS interior shell with foam padding offers protection from minor bumps.Soft inner foam cushion for comfortable wear.Bump cap insert with vent holes increased airflow.Use only to protect from minor bumps and scalp lacerations. Custom Fit: Size can be adjusted with a velcro strap to give a quick, secure fit. One size fits all.Cap Insert headform Size: 54-59cm( 21 1/4?-23 1/4?). Stylish Classic Design: Bump cap and Baseball cap in one,not bulky like a hard hat,looks stylish like a normal baseball cap.100% Cotton outer shell and sweatband. Widely Used:GREEN DEVIL Lightweight safety bump cap is great for workers in the low-risk workplace, for use on worksites where hard hats aren?t required, but added head impact protection is still needed to shield against bumps, scrapes, bruises and other minor head injuries, contain areas with low beams, pipes, passageways or other low hanging obstructions, ideal for mechanics and airline baggage handlers as well as workers in warehouses, factories, in-home . Tested Approved:GREEN DEVIL bump caps meet EN 812:2012 standard, the world?s only standard for bump caps.If you have any questions, welcome to reach us.We offer 100% satisfaction and a 30 day money back guarantee.