The Sea to Summit Aeros series of lightweight, inflatable pillows each feature technical fabrics to reduce weight and withstand exposure to moisture. The Aeros Premium features a soft brushed knit exterior for added comfort. The pillow is easy to inflate, fast to deflate, and can be fined tuned for the right amount of cushion and support thanks to a unique multi-function mini valve. Packs down to a fraction of its size and includes a handy stuff sack. Ideal for camping, backpacking, plane travel or an inflatable spare bedroom. Aeros pillows are compatible with Sea to Summit sleeping pads designed with PillowLock patches to secure the pillow to the mattress. Sizes Regular and Large have a curved, headrest shape while the supersized Deluxe has a flat, bedroom pillow shape. Regular size (curved) 13.4 x 9.4 x 4.3-inches, packs to 3.3 x 2.8-inches and weighs 2.8oz; Large size (curved)16.5 x 11.8 x 5.1-inches, packs to 3.1 x 4.1-inches and weighs 4.0oz; Deluxe size (flat) 23.5 x 16 x 5.5-inches, packs to 4.7 x 3.9-inches and weighs 6.9oz.