Portable Lumbar Support: Ease back pain with this self-inflating compact travel pillow. Ideal for the car, air travel, at sporting events, and anywhere you need low-profile lumbar support. Perfect for Travel: Ideal for use as an airplane lumbar support; conveniently take this inflatable back support anywhere you go. When deflated, the AirBack easily fits into a carry-on, purse or backpack. Personalized Comfort: For gentle support, twist the valve to self-inflate to the desired level in a matter of seconds. For a firmer feel, gently blow into the open valve. Always close the valve securely before using. Proven Quality Travel Support: Unlike other travel pillows, the Self-Inflating AirBack was approved by Physical Therapist Robin McKenzie, founder of The McKenzie Method, for natural lumbar curve support during prolonged sitting while traveling. Compact Back Support Pillow: Measures 16" long x 2" deep x 8" high when fully inflated; 8" long x 3" diameter when deflated. Wash with a cloth using warm water and mild soap. Rinse with clean water. Air dry completely.