Step two is an internal volume limiter that prevents exceeding OSHA recommended maximum noise levels

thumb indentations for quick and easy fit

Smooth level dependent function

A premium sleep solution that lets you bring the night everywhere

Slimline plug design stays flush with the ears

Macks Ultra Soft Foam Ear Plugs (NRR 33 | 10 Pairs) Default_musicians-earplugs Step two is an internalMack's Ultra Soft Foam Ear Plug Features: Provides high noise blocking for noisy environments Great for power tools, shooting, snoring, and motor sports State of the art, fully skinned, smooth surface Slow release comfort foam assists with fitting NRR 33 protection from noise Mack's Ultra Soft Foam Ear Plug Details Mack's Ultra Soft Foam Ear Plugs bring comfort and high volume noise protection together for a highly effective, multi purpose hearing