Adjustable envelope

1. A method of adjusting an envelope comprising the steps of:

A) forming an envelope comprising the steps of:

1) providing an envelope blank comprising a front panel, a first side flap secured to said front panel, a second side flap secured to said front panel opposite said first side panel, a rear panel secured to said front panel and at least some portion of said second side flap, a closure panel secured to said front panel opposite said rear panel and at least some portion of said second side flap;

2) folding said first side flap and said second side flap to cover a portion of said front panel;

3) securing an adhesive to at least some portion of said closure flap and said first side flap;

4) securing said rear panel to said first side flap; and

5) folding said closure flap over a portion of said first side flap, said second side flap, and said rear panel to form said envelope; and

B) adjusting said envelope comprising the steps of:

unfolding said closure flap to expose said second side flap;

unfolding said second side flap so that it fully extends from said front panel;

folding said second side flap along a new fold line at least some distance from said front panel;

tucking said second side flap underneath said rear panel;

inserting any contents into said envelope; and

securing said closure flap to said rear panel.

2. The method of claim 1 wherein said first side flap, said second side flap, said rear panel, and said closure panel are secured to said front panel along a fold line.

3. The method of claim 1 wherein said first side flap has at least one adhesive region.

4. The method of claim 1 wherein said closure flap has at least one adhesive region.

5. The method of claim 2 wherein said second side flap has at least one fold line at least some distance from said front panel fold line.

6. The method of claim 1 wherein said side flaps, rear panel, front panel, and closure panel are dimensioned to provide a secure envelope.

7. A method of adjusting an envelope comprising the steps of:

A) forming an envelope comprising the steps of:

1) providing an envelope blank comprising a front panel, a first side flap secured to said front panel, a second side flap secured to said front panel opposite said first side panel, a rear panel secured to said front panel and at least some portion of said second side flap, a closure panel secured to said front panel opposite said rear panel and at least some portion of said second side flap;

2) folding said first side flap and said second side flap to cover a portion of said front panel;

3) securing an adhesive to at least some portion of said closure flap and said first side flap; and

4) securing said rear panel to said first side flap to form said envelope with said closure flap extended; and

B) adjusting said envelope comprising the steps of:

1) unfolding said second side flap so that it extends from said front panel;

2) folding said second side flap along a new fold line at least some distance from said front panel;

3) tucking said second side flap underneath said rear panel;

4) inserting any contents into said envelope;

5) folding said closure flap over a portion of said first side flap, said second side flap, and said rear panel; and

6) securing said closure flap to said rear panel.

8. The method of claim 7 wherein said first side flap, said second side flap, said rear panel, and said closure panel are secured to said front panel along a fold line.

9. The method of claim 7 wherein said first side flap has at least one adhesive region.

10. The method of claim 7 wherein said closure flap has at least one adhesive region.

11. The method of claim 8 wherein said second side flap has at least one fold line at least some distance from said front panel fold line.

12. The method of claim 7 wherein said side flaps, rear panel, front panel, and closure panel are dimensioned to provide a secure envelope.