These non-toxic Maxi Markers have sink proof nibs, are super washable and are filled with water-based ink that washes out easily in cold water. Designed with young children in mind, these markers have large, child-safe ventilated caps. Markers that have been left with the cap off can easily be re-hydrated by dipping the nib in water. Set of 5 bright and vibrant colours will ensure children enjoy unleashing their creativity!