Rugged 600-denier nylon / polyester,

Large main compartment with 2 entries. Top has drawstring collar for expansion and a side zipper to get at lower things

Zip exterior pouch and roomy zip side pockets

Metal frame inserts in internal sleeves add support. Can be removed as desired

Padded, adjustable shoulder straps and waist belt.

Adjustable sternum strap.

It's approx. 17 x 11 x 24"h. Weighs 2 lbs., 11 ozs