Your Complete Guide to Positional Sleep ApneaWhat is Positional Sleep Apnea?What is Positional Therapy for Sleep Apnea?What are Positional Devices for Sleep Apnea? Positional Pillows Positional Shirts (aka "tennis ball t-shirts") Positional Belts (aka "bumper belts") Adjustable Beds Recliner Chairs Oral AppliancesSleep Position Trainers