Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: EuroSport B708 Classic Unisex High Density Washed Canvas Cargo Backpack
Product description: This is fashionable High Density Canvas Hiking Traveling backpack. It's very portable and you can put your keys,wallet,phone and other things in it. It's a high-quality and cool looking bag.There are three colors available for this bag including black, olive and Khaki. This kind of bag is made from pure cotton water canvas,texture is soft, strong and durable, carry comfortable and perfect accessory for short trips or long working days. We are sure you will love this product.
Product feature: Vintage high density prewashed 2-tone blend cotton canvas. Antique finish brass metal wares., 4 front pockets with zipper closure and 2 side pockets with choking closing system. This bag has multiple storage options and allows you to keep everything organized., Main compartment with zipper closure. Padded-back padding keeps your back protected even with a full pack, Interior is fully lined with two additional zipper pocket to store your tablet safely and organizer with cell-phone pocket, pen holders and credit cards/business cards holders., Top handle and Shock Absorbing padded shoulder straps with adjustable length system., Product Dimensions: 12.5 x 6 x 18 inches, Shipping Weight: 2.2 pounds, ASIN: B00N99XUTM, Date first listed on Amazon: September 2, 2014, Average Customer Review: 2.3 out of 5 stars 3 customer reviews
Product brand: Eurosport
Target attributes: Capacity
Answer: attribute: capacity
value: None
source: None