The Exped UL Pillow is an ultralight inflatable pillow made from recycled 20D polyester with an anatomical shape designed to follow the curve of the head and neck better than a flat slab of a pillow. The M size measures 38 × 27 cm inflated and packs down to roughly the size of a tissue pack, making it one of the smallest sleep accessories around.
At 51 g, it barely registers on a pack's total weight, so it's an easy add even to an ultralight kit where sleep comfort is usually the first thing cut. The shell is smooth polyester without a soft-touch finish, which some users find slippery compared to fleece-covered pillows — a common fix is slipping it inside a spare jacket or shirt.
As a purely inflatable pillow with no foam core, it won't offer quite the stable support of hybrid designs, but for weight and packed size it's a reasonable trade. It suits gram-counted treks well and works just as easily as an add-on for weekend trips with a heavier pad.