Triangular Marker Classpack. Tired of crayons and markers rolling out of your reach? Not anymore thanks to the unique shape of this Triangular Marker Classpack. Perfect for classrooms and art studios, this large pack comes filled with 10 markers each in 10 bold colors so you'll have plenty for each student to bring their creativity to life. Safe and non-toxic. (100 pcs. per unit) 5" Conforms to ASTM D-4236.