Apidura Expedition Frame Pack 4.5L in gray. Like new condition. I tried this pack for 3-4 day trips, but I prefer a full frame bag for my setup. Apidura makes excellent bags–welded seams, water resistant zippers with flaps to maximize weather resistance. Yellow interior for easy viewing. Zippers on both sides. Go to the Apidura web site–they have a pretty good sizing tool for their bags. Local pick up in Fort Bragg, CA, or I can ship it. Price does NOT include shipping.