We have always loved the Icelandic brand 66°North. Their gear is rugged and utility driven, and will always keep you warm and dry! Like most smart companies, they deploy a lot of waste saving tactics, like reusing extra material from old raincoats and turning them into new creations. Their 15L bright yellow daypack is a great example of this. The fabric on the sides, front and top is waterproof. Front pocket with waterproof zipper w /reflective film. Strengthening fabric on bottom and neoprene on the back for breathability. Adjustable shoulder straps and hook. Two buckle closing. The inside lining of the bag is quilted so it is perfect for storing a computer, cameras or other delicate items.