Whether we're running rim to rim in the Grand Canyon or linking summits in the high alpine, the Ultimate Direction Fastpackher 30 Daypack keeps us fully equipped for moving fast and covering monster miles on the trail. The 30-liter roll-top pack offers a large internal storage area that easily hauls extra layers, snacks, and meals for extra energy and enough water to keep us moving all day long. The running vest-style harness keeps our energy gels and water bottles easily accessible, and zippered access to the main compartment lets us quickly grab what we need without pulling everything out. The Infiknit back panel with FastFlow technology keeps air moving so we stay cool on the move, and the removable waistbelt and adjustable sternum straps keep the pack secure to minimize bouncing for more comfortable carrying.