Aeros™ Pillow Cases slip over your Aeros™ Ultralight, Premium and Traveller Pillows. They are also easily removed to be machine or hand washed. They also turn pre-2019 Aeros™ Pillows into Pillow Lock™ compatible with 2019 Sleeping Mats.And if you find yourself on a fast-and-light mission, they can be stuffed with a down jacket or other clothes to form a minimalist pillow.Makes a pre-2019™ Aeros Pillow Lock™ compatible with 2019 Sleeping Mats.Hidden 8” / 20cm zipper means quick and easy removal for washing.Length: 41cmWidth: 29cmPacked dimensions: 7.5x5cmWeight: 35g