After-sales Support: We will carefully check the integrity of the product before shipping, any problem can be dealt with through good communication, so please contact us with any questions, we will answer your questions promptly within 24 hours, wish you have a pleasant shopping experience!. Ideal Gift: Playing with these LED ice cube sensory toys can develop toddlers' grasping ability, fine motor skills and hand-eye coordination, and also improve concentration. Perfect for Easter/Christmas/Birthday/Thanksgiving gifts, party favours, party bag fillers, bathroom decorations. Safe and Reliable: These high quality LED ice cubes are made of high quality acrylic and electronic components, safe, non-toxic and durable, no sharp edges, won't hurt your baby. Easy to grip and sized for toddler's hands. Liquid Sensor: The sensor is located at the bottom of the ice cube and lights up when any liquid is detected, each ice cube can fade into 7 different colours within seconds. Batteries are installed in each ice cube but are not replaceable. Light Up Bath Toys: The Glowing Ice Cubes set contains 12 individual pieces, which is plenty of quantity to suit your every need. The magical LED ice cubes will keep glowing for about 8-25 hours. When the battery runs out, the ice cubes will no longer glow. Brighten Up The Bath: Want to add a little colour to your baby's bath? Use these ice cubes that glow in the water. It looks fun floating in the tub! The colourful cube decoration will bring a unique atmosphere to any occasion.