This product is a 50 pack of self-adhesive envelopes made by Mead and 10 clasp back envelopes. The envelopes are brown kraft and measure 9" x 12". The model of the envelopes is Press-It Seal-It and clasp back, which means they can be easily sealed without the need for moisture. The pack contains 4 units of 60 envelopes total. The product is made in the USA.