Baby Einstein Alpha Stacks Soft Blocks, Multisensory and Lightweight, Ages 3 Months and UpLearn letters and build cause and effect discovery with the Baby Einstein Alpha Stacks Soft Blocks. Perfectly sized for little hands to toss, stack, and tumble, this engaging set of 4 large blocks features bright colors, engaging sounds, and unique textures to promote sensory discovery through play. Use the blocks to teach letters A to Z, counting, and animal names or encourage baby to build fine motor skills by grasping, stacking, shaking, or tossing