The full size bed wedge pillow is perfect for people who often encounter the situation where items slipping off into a gap.Superior comfort is well ensured by the 25D sponge and breathable polyester. Also, the bed pillow becomes very elastic to perfectly fill the gap with a max length of 18cm, while its arched surface is ideal to support your neck in an ergonomic manner. By the way, a side storage pocket is offered to hold your remote controls, eyeglasses and smart phones. As for the cleaning, the zippered cover is detachable, allowing for convenient hand washing and machine washing. Finally, the rolled-up gap filler requires no assembly but 72-hour expansion period.