The Delta 35 is a lightweight and effective daypack, but with a capacity of 35 litres. It can easily be used for a weekend hike or trek in the mountains. It has a single compartment with a horseshoe style opening which extends approximately three quarters down each side. The weather proof YKK zippers provides some protection from the elements as well as the durable water repellent (DWR) fabric. The s-shaped shoulder harness makes the pack comfortable to wear which is added by the coolmesh windtunnel back system which allows moister to evaporate and be carried away from your back. This backpack is full of features such as compatibility with hydration systems; it includes crampon loops, ice axe holder, map pocket and mesh side pockets to hold your drinks bottle or binoculars. As well as a grab handle, sternum strap and adjustable mesh waist belt. Main fabric: ks100e ks100e is a 1000 denier nylon fabric coated with a silicone/polyelastomer for improved tear strength and flex resistance. Finished with a fluorocarbon durable water repellent (DWR) that improves the water resistance of the fabric.