8 ADJUSTABLE STRAPS- For tying up your pack or hanging sleeping bag, mat, hammock, tripod, and other gears. mesh side pockets,to keep your stuff separate and organized. Our backpack fit women and men in 5'-6'5" (90lb-250lbs) and It meet size requirements for most airlines, enough room for 3 or 4 days trips. Comfortable Daypack: Breathable mesh shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. Widened and thickened S-type shoulder straps and high elastic breathable back support for best ventilation and easing burden 50L WATERPRROF BACKPACK:A rain cover included.The rip-stop polyester material can prevent the water from sipping into the bag;If the heavy rain comes, then rain cover works.