The ArtBin Super Satchel Series Marker Storage satchel is a versatile way of carrying your pens and markers. The revolutionary trays lock into the satchel securing your markers and pens into the spot you place them even if you flip the satchel upside-down. Made of durable polypropylene plastic this satchel is a crafters dream! Just like other super satchel products this satchel is stackable and is able to be divided into compartments. Extra marker trays sold separately.