These are very functional and useful items that serve well for holding neatly folded 8 1/2 x 11 sheets of paper in them. The paper can be written on or not - either type can be inserted inside this valuable 'envelope' without issue. I have also found that 11 x 14 paper can be used as well if one remembers to fold it more times than one would an 8 1/2 x 11 sheet. In sealing these envelopes it is important to remember that these are self-sealing so licking the flap is NOT recommended. Rather one must pull the adhesive protective strip AND THEN seal the flap. You should not dare I say MUST NOT lick the flap at any time.
The envelopes are very attractive and easy to use. There is no messy wetting of an adhesive and the protective strips come off with great ease. The anhesive is very effective.