Deuter-a pack pioneer and innovator-demonstrates their usual great craftsmanship in this top-loading daypack, but in a lighter design To cut weight, pack is made with light but strong and abrasion-resistant micro-rip/ripstop nylon and 210-denier and 420-denier nylons. SL refers to Slim Fit, specifically designed with narrower, shorter shoulder straps and shorter back system proportions to fit those up to 5 7 tall. Deuters Aircomfort patented suspension allows warm air to escape and fresh air to circulate between pack and your back for increased comfort. Suspension consists of a spring steel frame that is flexible and light, and tensioned to support the suspended mesh for ventilation. Contoured, padded shoulder straps are lined with MeshTex fabric for breathability and feature stabilizer straps for proper positioning of pack. Soft hip pads and hipbelt wrap body, stabilizing and controlling lateral movements of pack while on the go hipbelt features a valuables pocket. Main compartment has plenty of room for a full day hike, on or off the trail. Front stash pocket and side mesh pockets store often-accessed gear such as water bottles, headlamp, first-aid kit, sunscreen, multi-tool and more. Top lid pocket can hold your map, compass or GPS, spare batteries and other small equipment items. Hydration-compatible design features reservoir pocket and drink tube exit port for on-the-go hydration reservoir sold separately. Side compression straps let you cinch down loads for jostle-free carrying. Deuter recommends a carrying capacity of 30 pounds.