As children approach 24 months, they begin to hold crayons with the thumb and two fingers. Washable triangular crayons are the right shape to help guide their fingers into the tripod position for more purposeful and controlled drawing. Their scribbles now look like the zigzags or tighter, more controlled circles. The tripod grip is important for developing later writing skills. Crayons are designed to easily wash off walls with just warm water and a sponge. 8 classic colors. AP Seal, non-toxic.