These stimulating toys are designed to be attached to other Tiny Love products, such as the Tiny Love Gymini 3D Activity Gym and the Tiny Love Gymini Deluxe. The set of three keys will be a sure hit with babies--easy for small hands to handle and made with plenty of chewy rubber. The rattling bear flying on a rubbery yellow cloud makes an excellent teething toy. The cloth bird with flapping yellow wings makes a satisfying squeak when squeezed. The plastic link on the toys allows them to be attached just about anywhere, but especially to cribs and playsets.