This cute kids cloth is called Alice in Wonderland by Meri Mero. Cute girl is sitting on the ground near mushroom and butterfly is on her head. In Japan, we carry cloths around with us because not all restrooms have a way to dry your hands and in the summer it is really humid so we use these to wipe the sweat from our face etc.
It measures 20 cm x 20 cm or 7.8 x 7.8 inches. It is 100% cotton