267-HPF210 PIP Uncorded Disposable Ear Plugs Uncorded 200 Pairs/BoxPIP Safety Mega Bullet Uncorded Disposable Soft Polyurethane Foam Ear Plugs NRR 32 Box of 200 267 HPF 210 Polyurethane Foam: The soft polyurethane foam has a unique cellular structure thats allows for slow expansion to perfectly fit the size and form of the ear canal, with a sealed surface that prevents foreign bodies from penetrating. The material provides high and immediate noise reduction. FEATURES: NRR 32 protection. Consistent cellular structure