A simpler & more natural anti-snore solution Sizing: Measure your chest circumference (in the area where you'll be wearing the belt) to determine your size. Standard fits 24"-34" and Standard Plus fits 34"-54" Excellent cost effective positional therapy Noodle can be worn horizontally or vertically Premium foam insert designed for comfort but still maintains sturdiness needed for positional sleep. Made with a non-slip breathable mesh belt with an enhanced hook and loop fastener Snoring can often be improved or eliminated when sleepers stop sleeping on their back. This is due to improved airflow while breathing. The Sleep Noodle helps to provide positional therapy while sleeping in bed. Sleep Noodle UP stands for Universal Positioner. Specially designed to allow the user to wear the noodle in a horizontal or vertical alignment.