woodyknows 2021 newly upgraded side-sleeping backpack with all magic tape straps and enhanced zipper, breathing aids for sleep, relieves snoring caused by supine sleep position woodyknows breathing aids for sleep, provides comfortable back support to help you sleep on your side so that the tongue, soft palate, and relax throat tissues will not fall backwards, blocking the respiratory tract and inducing snoring. the unobstructed airway will allow you to breathe smoothly while sleeping.