Classmaster's premium glue sticks have been developed specifically for use in schools. The long-lasting PVP educational formula gives these glue sticks a shelf-life 3x longer than those made from standard PVA. The washable formula is non-toxic, acid and solvent-free, making it safe for use in classrooms, offices, and other environments, such as nurseries, playgroups and art and craft workshops. Pack contains 72 x 20g glue sticks in a classroom tray compatible with most school storage systems.