The Sea to Summit Aeros Premium inflatable backpacking pillow changed the way thousands of people sleep in the backcountry or while traveling. Unquestionably the most comfortable, quietest, easiest to use, lightest, and most packable inflatable pillows on the market. Updated for 2019 to be compatible with Sea to Summits Pillow Lock system which allows the pillow to attached to any Sea to Summit sleeping pad. It features a super soft brushed 50D polyester knit exterior and a silent, contoured TPU air bladder the provides comfortable support. Synthetic fill between outer fabric and TPU bladder increases airflow for better airflow while sleeping. Inflate pillow in just a few of breaths and fine-tune easily with the multi-functional valve. Curved internal baffles create contours that cradle your head. Scalloped bottom edge centers pillow around your shoulders whether you are sleeping on your back, side or upright in a chair. Comes with an Ultra-Sil stuff sack for packing and travel. Care: Hand wash & air dry. SPECS: Large Size: Dimensions: 16.5 x 11.8 x 5.1 in. Weight: 4 oz / 114 g (Three milk chocolate bars). Packed Size: 3.1 x 3.3 in(Fits inside your favorite coffee mug).