No, Shush earplugs are not developed for sleeping. Focus earplugs are sometimes confused with sleeping earplugs but they are not. They are developed to reduce distracting sounds at open offices, to help increase productivity, not to help you sleep better.
Sleeping earplugs have no filter and sound quality is not important. Also there is no stem that sticks out of your ears so you can lay on one ear comfortably.