The HABA Rainbow Baby Ball is a soft fabric sensory toy designed for babies. According to the Amazon listing, the approximately 6-inch ball is made from polyester and combines colorful fabric panels with different textures and sound elements, including crinkle, rattle, and squeak features. Its lightweight shape is intended to be easier for small hands to reach for, grasp, roll, and explore during supervised floor play.

The soft construction makes it suitable for indoor rolling games, supported tummy-time interaction, and early back-and-forth play with an adult. The varied surfaces and sounds give babies several details to notice without requiring batteries or electronic lights. The listing also describes the ball as machine washable, which is useful for a toy that may be handled and mouthed frequently.