I've used it twice, but I'm selling it because I don't have a chance to use it. This is a lightweight and compact pillow that supports the neck and spine, providing comfortable sleep. It consists of a removable soft fabric cover and soft insulation, promoting a relaxed sleeping posture. Features: * Stratus™ insulation on the top of the pillow is soft and moisture-wicking. * Lightweight inflatable construction allows for adjustable comfort and minimal pack size. * Scalloped shape supports the neck and shoulders. * Stretch polyester top fabric is soft and smooth to the touch. * Brushed bottom fabric helps the pillow stay in place on the bed. * Low-profile two-way valve allows for easy inflation and deflation. * Outer cover is removable and washable. * Includes a stuff sack made of tangle-resistant rubber. Weight: 95g Thickness: 10cm