DESIGNED FOR REPEATED USE: Double prong metal clasp is durable and eyelets are reinforced PERMANENT SEAL: In addition to the clasp closure, the deep gumming on the flap can create a permanent seal HEAVY DUTY: Extra durable, 32 lb. brown Kraft stock gives contents extra protection during mailing, storage and handling VERSATILE: Perfect size for small or folded documents – no need to waste large envelopes for small items 100 PER BOX: Always have a good supply on hand with this 100 count box