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.
It meet size requirements for most airlines, enough room for many days trips.
CONFORTABLE 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 WATERPROOF 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.