Walkers FOAM EAR PLUG 10PK BLISTER. The earplugs' foam tips will conform to the shape of any ear. Their lab noise reduction rating (NRR) is 32 dB. They come in a pack of 5. Specifications for Walkers Foam Ear Plug 10Pk Blister: Manufacturer: Walkers Quantity: 10 Size: One Size Color: Multi Last Chance: Yes Package Contents: Walkers Foam Ear Plug 10Pk Blister Conform to shape of ear foam tips are ideal for louder environments. Convenient 5 pair pack includes plastic carrying case. NRR 30dB.