Dimensions: 12" X 12" X 4'', Ultralight: 5 oz Cover Material: one side is stretchy polyester spandex and another side is super soft and cozy fleece. Filling: 100% polystyrene beads. There is a snap button in the middle for easy holding. Travel with this pillow and it gives to the shape you want and still gives support. Great for Planes or long drive times! Great for your neck and head. Spot clean and hand wash only. Please note that these micro beads pillows are mainly used for naps at home or in travel and NOT recommended for long-time use at night as traditional bed pillows. They are very cushy but cannot sustain a lot of weight as the seams could burst after a while. Bookishbunny Micro Beads U Shaped Pillow - medium size, the cover is not removable Size about 12 inch W x 12 inch H x 4 inch D and weight about 5 oz. This is medium size, not large size. Cover Material: one side is stretchy polyester spandex and another side is super soft and cozy fleece. Filling: 100% polystyrene beads. There is a snap button in the middle for easy holding. These Pillows are filled with tiny micro beads. Travel with this pillow and it gives to the shape you want and still gives support. Great for Planes or long drive times! Great for your neck and head. Spot clean and hand wash only.