Rechargeable: Features micro USB port to charge unit wherever you are

ear hooks and TPU controller have been redesigned to withstand exposure to solvents and extreme temps

Ready-fit eartips

Choose from three models that use patent pending technology to open your ears

one for fan sounds and one for white noise sounds

QuietOn Sleep Memory Foam Replacement Tips for QuietOn 2.0 (S | M | L) upsell_alpine-motosafe-race-ear-plugs Rechargeable: Features micro USB portReplaceable foam tips designed for QuietOn Sleep (aka 1. 0 and 2. 0 models) Comfortable fit to find QuietOn Sleeps full performance Made of proprietary memory foam material Sales box contains three pairs of foam tip for QuietOn Sleep (size S M L)