Our Zip-in Front Panel fits over the mesh panel of the main utility (meat) compartment of our J-series hunting packs. This panel will transform your pack into a conventional style, fully enclosed backpack, and is also reversible. So you can choose camo or high-visibility orange, based on the needs of the day. The blaze orange panel can be attached to the pack even when it's in the compact mode, to give an extra element of safety to the hunter. (Note: the J3EP fits recent model J-type packs, including J104, J105, J34, JP9, and J107 packs. Early J1s, and first-generation J104s, have a different zipper and will require the J4EP. Please contact us if you need help identifying which panel you'll need for your pack).