Best Seller | Natural 4 Bar Rsvp Envelopes - 250 Pack These Envelopes are converted from Cougar Natural 70# paper. They will hold an enclosure sized A1 (3.5 x 4 7/8 ) and 3.5 x 5 . These are commonly used for RSVP Cards and they are the smallest envelope that can be mailed through the United States Postal... more | | $27.99 $22.39 FREE shipping go to store |