3M™ Hard Hats are engineered to provide comfort, protection, balance, and stability to help keep professionals and DIYers safe. 3M™ Vented Hard Hat with Ratchet Adjustment has comfortable suspension that sits lower on head to reduce pressure points and increase security. Featuring a vented design to help wearers stay cooler. Offering lightweight protection and durability, 3M Vented Hard Hat with Ratchet Adjustment is part of the 3M™ Pro Series Safety Products line which was designed for the way pros think, the way they shop and the way they work