3M Hard Hats are engineered to provide comfort, protection, balance and stability to help keep DIYers and professionals safe. This full-brim non-vented hard hat with ratchet adjustment will protect the head from possible impact on jobsites. Comfortable suspension makes the hat sit lower on the head to reduce pressure points and increase security. Features a smooth-turning 4-point ratchet suspension system and provides optimized comfort with three levels of height adjustment for a custom fit.