Lightweight women's backpacking pack for overnight trips. Your pack shouldn't weigh more than the gear inside, that's why we engineered the Big Agnes Sun Dog 45L women's pack. Packs for women, designed by women. Built to provide more comfort for a women's shape, this pack is body mapped for women featuring curved, contoured shoulder straps and anatomical hip belt. The Sun Dog 45L include plenty of storage capacity, custom fit adjustments, and feature a back panel opening for easy access on the go. At Big Agnes, we've integrated our years of experience, ultralight sustainable materials, and technical features to deliver a fast and light pack for overnighters, thru hikers, and anyone in between.