Manhattan Toy Wimmer-Ferguson Infant Stim Mobile To Go Travel Toy From Manhattan Toys award winning Wimmer-Ferguson infant collection - the original innovator of black and white developmental toys Attaches to most strollers, infant carriers, and car seats with the sturdy plastic clamp Introduces baby to high contrast, black and white and color graphics for early visual and multi-sensory development 3 reversible cards display black and white graphics on one side, color images on the other, to be flipped based once baby is acclimated Recommended for ages 0-5 months, top circular card measures 7" across; a lightweight, easy to pack activity travel toy for babies