Mardingtop 40L Water-resistant Hiking Daypack/Camping Backpck/Travel Daypack/Casual Backpack with Rain Cover for Outdoor Climbing School-6802 4 COMPRESSION STRAPS For tying up your pack or hanging sleeping bag, mat, hammock, and other gears. HYDRATION SYSTEM COMPATIBLE- Hydration access on a side of the pack with water bladder sleeve in the main compartment. FRONT LOOP Soft latching loop for your jacket or some lightweight items. ACCESSORIES SBS zippers and YKK buckles. WARRANTY Includes 90 days limited manufacturer?s warranty