A great pack for dayhikes or quick alpine summits, the Zelus 25 Pack from Marmot is lightweight, durable, and fully featured. Marmot has constructed the Zelus 25 of heavy duty high density nylon materials and has provided a removable frame sheet that provides support. Other features on the Zelus 25 Pack include a hydration sleeve, dual ice axe loops, an integrated vertical rope carry system, and a comfortable molded back panel.