Chunkie Markers are an exciting new medium for all ages. Bright colors flow without interruption from an extra large round patented tip that will not dry out.Make "Dot" art or thick marker lines. Colors can blend in a water color effect. Non-spillable bottles. Non-Toxic. Washable! Available in box sets of 4 and 6 assorted bottles. Conforms to ASTM D-4236. All bottles contain 75 ml.