Set includes 8 water-based acrylic paint markers Comes in a rainbow of bright colors Works on porous surfaces like paper, cardboard, wood, and rock No alcohol scent Cleans off smooth surfaces such as glass, whiteboards, and glazed ceramic May stain some surfaces. Test on a small area before use. Cover and protect your work surface To avoid smudging, allow time for paint to dry. Adult supervision is advised 6ΓÇ¥ x 5ΓÇ¥ Suitable for ages 8 and up