Blister packed with one pair of Thunder Plugs and a smart aluminium key chain carry case. Thunder Plugs offer up to 18dB of noise reduction. The patented Thunder Plugs design filters sound, ensuring you still hear the music properly while protecting your hearing against high decibel levels. Designed to comfortably and discreetly fit into your ear (whatever your size) Thunder Plugs have a handy pull tab to allow you to easily remove or insert them. HEAR THE MUSIC ? PROTECT YOUR EARS!