Cooshie Booster A perfect booster seat for when your child outgrows a conventional booster, but is not big enough for a full-size chair. With its non-tip base, its superior to the conventional, slippery type that needs to be tied down. Its also cozier to sit on because of the light density foam surface. Cushion is washable and portable. 6.5H x 15W x 14D. Invented by a mom! 61/2"H x 15"W x 14"D. Blue or Black.