The Nuby Bathtime Fun – Letters & Numbers; are an easy way to make bathtime a fun learning experience. Th 36 letters and numbers float in the water and stick to the walls when wet. This product exceeds all government safety regulations and standards. Properties:; – Letters and Numbers stick to the bathtub wall. – Soft foam letters float in the water. – Makes bathtime fun! – Includes all 26 letters and 10 numbers.