Use the ultralight COCOON Air-Core Hammock/Travel Pillow for added comfort in your hammock. The trapezoidal pillow features a suspension system made of loops, elastic cords, and two carabiners, allowing the pillow to be effortlessly secured to the hammock. Like all COCOON Air-Core Pillows, the Hammock/Travel Pillow is enveloped in a high-quality synthetic filling that contains an inflatable, replaceable air core. The air core can be removed and, if necessary, replaced or repaired. The cover can be easily washed. A flat one-way valve ensures quick and effortless inflation and deflation of the air core.