Jokingly named on the trail for keeping plenty of snacks at your finger tips. The Feed Trough features a 4 point, no sew, attachment that works with any pack. Attach it to the shoulder straps for a chest pouch or it can be attached to the top of the pack as a brain. Very handy to keep those high use items at your fingertips, such as phone, headlamp, maps, and Snacks! Water resistant and extremely durable.