Everything is cuter when is miniature! These mini dumbbell rattles are perfect for photos, desks, bookshelves, baby shower decorations, and baby gifts! Let the baby grow healthily, while the baby can develop the ability to grasp and enjoy the fun of exploration. This 3D printed dumbbell is scaled down from a 15 lb weight. It is 4.5 inches in length (handhold is 2 inches), 1.75 inches in height, and 1.75 inches in width. It weighs 1 oz. The rattle is a pleasant sound that you will hear when shaking it. These dumbbells are 3D printed from PLA plastic which is nontoxic and BPA free. PLEASE NOTE: THE PLASTIC IS A HARD PLASTIC, so please use your discretion in how old to allow baby to start playing with them. This new and fun dumbbell becomes a fun source of exercise and interaction between father and son! As a baby or party gift to bring joy and care to new parents Fitness father and son, the brave baby shaking dumbbells, so that friends and relatives shocked stunned, can not help but for the baby's lively and lovely actions marvel!