Part of our Pro Series the 3M Professional Non-Vented Hard Hat is designed with the pro in mind to help bring you protection and comfort. Featuring our ratchet adjustment system, simply turn the knob in the back to achieve the perfect fit no need to remove your hard hat. The lightweight yet durable shell works in tandem with the tri-level suspension system to help protect workers from head trauma due to small objects falling from above, while the brow cushion helps keep you comfortable throughout your shift. Your comfort is key on the job to help keep you focused on the task at hand so rely on the 3M Professional Non-Vented Hard Hat. 3M Hard Hats are engineered to provide comfort, protection, balance and stability to help keep Dyers and professionals safe. 3M Full-Brim Non-vented Hard Hat for custom, on-head sizing. Suspension sits 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 3 levels of height adjustment. Part of the 3M Pro Series Safety Products Line, this hard-hat was designed for the way pros think, the way they shop and the way they work.