ultralight running vest style overnight backpack Set the pace on your next adventure with a Sweetwater UL pack. Streamlined design prioritizes a perfect fit, featuring running-vest-style straps that securely hug your chest, back, and shoulders. Smart, effective construction secures your load without unnecessary bulk, using durable, recycled nylon derived from discarded fishing nets. The Sweetwater UL 43L makes fastpacking expeditions a breeze. Whether hitting the trail for a thru-hike or a quick overnight, the propriety frame technology and ultralight durable fabric efficiently support your gear, shifting the weight from your shoulders to your hips. Instead of choosing between ultralight, comfortable, and durable - choose the Sweetwater UL.