Quality Park Postage Saver Security Tint Window Envelopes

Booklet - #10 1/2 - 6" Width x 9 1/2" Length - 28 lb - Adhesive - White - Paper - 500 / Box. Made of durable, 28 lb. white wove stock that holds the same capacity as flat mailers without the postage cost. Reflex blue pattern that obscures details of the contents even when held up to light.