Raising a tiny triathlete? Then their toy box isn’t complete without a Buff Baby Dumbbell Rattle. Watch on as they work on beating that pesky baby fat! All kidding aside, the clever toy boasts your typical, gentle rattle sound and a natural hand-grip. It contains no phthalates and is free from BPA, because we all know it’s their drooly little mouths that will get the most from this workout.