Sleeep® are made of aerospace grade aluminium and Sleeep® Pro are made of titanium. As titanium is a denser metal Sleeep® Pro reduce more sound, particularly low end rumbling sounds (or low frequencies). If its low rumbling sounds keeping you up at night, the Sleeep® PRO is going to be the Ear Protector for you!
Modified on: Tue, 16 Apr, 2019 at 11:55 AM
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