These Large Duralopes are more substantial and secure envelope option for your elementary school and classrooms. The 12" long x 9 1/2" wide holder is made of a durable poly satin material and features a 1" deep gusset expansion and strong button and elastic closure. Stock them in your school store or hand them out to teachers before the school year starts with important information. They're also great for informational packets for prospective families and students.