Of course, if they are too loose or too tight... then you can change the
size of ear plugs.
They obviously know that the rooms are noisy because they give you a pair
of ear plugs on the nightstands.
Unless you've been living under a rock with a sheet over the top of it, eye mask applied and donning a
set of ear plugs, you'll almost certainly have played, or at least heard of he Lego series of computer games.
An air sampler the
size of an ear plug is expected to cheaply and easily collect atmospheric samples to improve computer climate models.
Noise Reduction Rating: Noise reduction rating, or NRR, tells you just how effective a
pair of ear plugs are against different noise levels.
Some of these ear plugs come in yellow, blue, and even pink!