Blue and yellow combine to create green in the bathtub. Learning colors with INKEE Color Learning Bath Drops is fun. These bath drops are the refill pack for INKEE Wands: magic wands that turn the foamy bath water into a colorful bath. Learning while bathing: INKEE Color Learning Bath Drops were created to help little ones learn about colors and their combinations, turning bath time into a magical but also tactile experience. Safe bath time fun with INKEE: The colorful bath drops have been tested by TÜV Rheinland, rated as "very good" by the independent institute Dermatest, and do not contain microplastics. The bath additive does not stain the skin, hair, or bathtub. CRAZE INKEE bath additives ensure real fun for the little ones in the bathtub. Ideal as a small gift: whether as a small gift, as a Christmas present, to complete the Advent calendar, or as a bath toy for children who otherwise do not like to bathe. CRAZE bath additives are suitable for every occasion. Product dimensions: Width: 9.2 cm, Height: 2.5 cm, Length: 6.7 cm, Weight: 0.05 kg.