Stone Glacier is known for their ultra-lightweight, minimalist hunting packs that carry weight phenomenally. The Avail 2200 is no different. The Avail is the ultimate day pack, built for carrying just your essential gear for a day hike, fishing trip, or day hunt and everything in between. Equipped with an internal frame and load lifters, the Avail can be used as a stand-alone pack or you can remove the shoulder straps and waist belt and attach it to either the Xcurve or Krux external frame. There is a good video showing this process on the Stone Glacier website at https://www.stoneglacier.com. The shoulder straps are completely adjustable, just like the external frame’s, with hook and loop velcro. The bag is made out of Cordura 500, which is internally lined with a waterproof material. The Avail is also hydration bladder compatible.