Trayola contains Ultra-Clean Washable Markers for classrooms, camp, clubs, and afterschool programs. The fine-line marker contains an Ultra-Clean formula that washes easily from skin, clothing and common household surfaces - even painted walls. Slender tips make the markers ideal for detailed work like writing and creating signs and banners. The Trayola includes six markers in each of eight classic colors. Two stackable plastic trays are included for easy organization and storage.