●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 ●CANT SEE THROUGH ENVELOPES - Security printing pattern on the inside prevents from seeing what inside. Windowless envelope ●LONG LASTING SUPPLY - 500 count per box ●NDAA Section 889 Compliance Certfication