Chunky markers are ideal for 3+ year olds as they provide an easy grip in little hands. Markers have sink proof tips which are virtually indestructible and non-toxic, super washable, water-based ink that washes out easily in cold water. Accurately ventilated lids and no end caps for safety. Bright, vibrant colors with large ink reservoirs. Dry markers can be easily re-hydrated by dipping the tip in water.