For a daypack that goes the distance, and then some, get the Gregory Women's Jade 38 Pack - Small/Medium. With its capacity, you can take along everything you need for a long day hike, and some overnight essentials too. The Jade 38 provides FreeFloat ventilated suspension in a 3D comfort cradle hip belt with flexible panels that move with your body, not against it. The packÕs back panel features moisture-wicking mesh material for a ventilated surface against the body. Additional features include six external pockets, hip belt pockets, and hydration compatibility.