Multiple textures & materials engage baby's developing tactile sensitivity & teach baby about variety Chunky sized bumps encourage reaching, grasping, and transferring from one hand to the other Gentle rattle sounds create neural connections in babies brains from birth through 3 years Bright colors & bold patterns are visually appropriate for baby's developing vision Safely tested to infant standards including ASTM, CPSC, EN71 & Health Canada 5.5 long x 7.5 wide x 8.9 high