GREEN DEVIL Universal Bump Cap Insert for Baseball Caps Vented Lightweight Safety Bump Hat Insert for Men Women

easily slips into ball cap, and feels surprisingly solid. Give confidence, but haven't gotten whacked yet so I can't prove it. Feels good though.

I liked the added protection vs just the cloth material of the cap. the vents keeps my head cool on hot summer days. will buy more for my other caps.

I helped out at my kids’ tennis camp but since I’m recovering from a brain injury, I needed to be safe. I put this inside of my ball cap and it’s virtually invisible. As a female, this fits snuggly inside my small cap. It gives me much more confidence. Goethals the kids are little so I k ow it could withstand a small bump.

I'm about to start a job as an aircraft mechanic and I already know I hit my head on everything having experience working on cars. I have tried a couple other bump caps and the issue is that they are designed for people with rounder heads. I definitely have a bigger more egg shape to my head and this bump cap fits... PERFECT! I am using it in combination with a short bill ball cap I also found on Amazon. ZEGOO 100% Cotton Short Brim Baseball Cap Golf Hat: (https://www.amazon.com/dp/B0917KYCG2?psc=1&ref=ppx_yo2ov_dt_b_product_details). The two goes hand in hand. With the short bill, I'll be able to see what I'm doing and maybe clip a small flashlight onto it. The plastic of the bump cap might not be the most comfortable feeling against my bald head, but for reassurance that I won't gash my head on sharp corners, I'm willing to put up with it while working in tight places. I will be ordering more to make sure I have backups just in case they are no longer available or something happens to it.

Well made but almost too big for an adult s/m hat.