Purchased about 10 years ago and used only 2-3 times. It's probably around 22L in size. I believe this is made of ballistic nylon, not 60/40 cloth. The following is a reprint from the sales site: ORIGINAL DAYPACK A simple item that has been available since the brand's inception, it's convenient for outdoor activities, as well as for town use, commuting, and going to school. "MT.RAINIER DESIGN" is an outdoor brand that was born in a sewing factory in California in 2006. It features items made with high-performance materials suitable for the outdoors. Height 41cm x Width 30cm x Depth 15cm Size...11〜25 L