Multipitch Snack Pack
This is my "snack pack". My take on multipitch storage - a cinch top stuff sack with a zippered phone pocket that slides on your chalk bag strap. Plenty of room for snacks, headlamp, tiny jacket, etc. I've packed all my food for full El Cap IAD missions into this thing! Phone pocket has an integrated Nite Itze tether for belayography. The unit easily slides around to the front on the chalkbag strap for easy access "snack mode" while at anchors.
Pattern Download Link (Printable, be sure to not scale)
3/4 Webbing (I used polypro)
#5 Molded Zipper
Construction Detail Photos: