Tinker Rings Set of 5 textured rings with built-in magnets for easy stackingEncourages fine motor skills, sensory learning, spatial reasoning, tactile learningRings each feature soft, rubbery surface, engraved texturesMagnets built into rings, snap together and stack no matter which side of rings are facing upIncludes 5 rings sized big to smallLargest ring measures 4.75 inches in diameterBPA-free - Exceptionally safe
