Made this from a piece of scrap 1000d cordura I have in my sewing stuff... its a little small for the lengths of straps needed but it works. 18" width, 12 MOLLE slots, 5 inch wide main band and 6 inches tall "bib" portion with 9" and 6 slots width. With the Gregory UM21 Medium pocket on the center, and 2 canteen covers.. I feel it is good enough and could put a horizontal pistol holster up top if I want to.. or a shallow MOLLE pouch or 2-3 Grenade pouches or whatever I feel like clipping to... I could replace the Gregory main pocket with a Sustainment pouch and take up all the space on the center if I want to but it isnt easy to get into from the front due to the small opening ( a zippered pouch is best here.) EDIT: my bad, it's actually 3" wider/longer than I said, I originally planned 15"/10 slots but added on 2 more slots/3" to the length/width.