With an ergonomic, women specific fit and ventilating back panel and straps, the Deuter Women's AC Aera 28 SL Backpack offers all day comfort for long hikes, as well as ample capacity for carrying supplies. The backpack's narrower shoulder straps with soft lined edges are set closer together to fit smaller shoulders, and prevent chafing or uncomfortable bulk at the chest and armpit area. The hip belt is shaped and positioned for optimal comfort and support around a woman's figure. The backpack fits torso lengths ranging from 14. 5 to 18 inches, and offers four pounds of additional carrying capacity than the AC Aera 22 SL if you need a little more room for packing along supplies for your kids or hiking companion, or if you're out in colder temperatures with bulkier layers to pack along. Once you're moving on the trail, the supportive spring steel frame and side compression straps support and balance your load, while the ventilating AirComfort mesh back panel provides breathable comfort. If the weather's drizzly when you hit the trail, the backpack's water resistant fabric will protect contents inside, and an integrated rain cover offers added protection if the drizzling doesn't let up or turns into a downpour. The backpack is compatible with your hydration reservoir, and includes a reflective attachment for your drinking tube so you can easily find it if you're out on the trail before sunrise or after sundown. Stick items you'd like quick access to in the mesh side pockets and store valuables in the protected zippered lid pocket. Attach tools or carabiners to loops on the lid, and slide your hiking poles through the side pole attachment loop. When you reach a scenic peak that makes a good lunch spot, open up the front panel for easy access to your food and supplies.