Features Material: Raptor Zero (100D nylon), DWR Volume: 2441 cu in Support/Suspension: Comfort Vent Back Pad Shoulder Straps: Contact airmesh Waist Belt: yes, Contact airmesh Description Product Description Spend a night in the woods after hiking for miles with Montane's Ultra Tour 40 Backpack. This superlight backpack feels best in summer's warmer weather, with a Comfort Vent Back Pad for cushy moisture management and Contact airmesh at the shoulder straps and waist belt for breathability. Its Raptor Zero fabric is surprisingly strong for how light it feels, and it has a DWR treatment to shed light rainfall. The Ultra Tour also features a roll-top closure for additional protection from wet weather. It has an internal sleeve designed for hydration reservoirs, and there are side angle stretch mesh pockets for water bottles. Montane also added a large front stretch pocket for easy-to-access layers, hip pockets for energy gels, and removable attachments for trekking poles.