The Aeros Inflatable Backpacking Pillow Has Changed The Way Thousands Of People Sleep In The Backcountry Or While Traveling. Luxurious, Lightweight And Compact, It Features A Super Soft Brushed 50d Polyester Knit Exterior And A Silent, Contoured Tpu Air Bladder For Support And Comfort. Updated For 2019 To Add Compatibility With The Unique Sea To Summit Pillow Lock System.