Therapeutica Adult Commuter Pillow # CPA103 Excellent support for use in autos, planes, trains, buses, etc. Ultimate comfort for resting in a vehicle. Ideal for people who commute,Excellent for adult passengers who want to sleep while traveling. Keeps head and upper spine steady and supported,Foam is covered with a fitted case which can be easily removed for washing. Easily attaches to any head rest using Velcro straps (included) to provide a secure and comfortable rest or sleep. Small enough to tote in a carry-on bag for traveling,One size fits all adults  no measurement required to ensure correct size.