It's made of durable Polyester and High Density Sponge,if food falls down, the pads get dirty, can be wiped with a wet towel. Independent cover with zipper closure can be easily removed and hand washed or machine washed. Lightweight and portable, it is very convenient to use at home and take it with your baby to travel, theater, movie theater, restaurant and more. Dimensions: 12.6"L x 3.1"H x 12.6"W, fit most of dining chairs. It can be used for toddler children old who can sit unaided at a table to enjoy the meal with family together. Also can used for children writing, drawing and play toys. Adjustable belt 19.7"-29.2") ,suitable for different sizes of chairs. 2 straps with clips which fasten under the chair and around the back.And it won't slip or slide around.