HIGH QUALITY & BULK PRICING – 24lbs high quality envelopes at a fraction of the price,NO NEED TO LICK THE FLAP ANYMORE – Very convenient,SELF SEAL ENVELOPE- Just peel and stick 4 1/8 in. x 9 1/2 in size envelop,CAN’T SEE THROUGH ENVELOPES – Security printing pattern on the inside prevents from seeing what inside.