Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Girls Backpacks, COOFIT School Backpacks For Girls Boys Kids School Bags Bookbag
Product feature: Boys Backpack Exquisite workmanship: Printed school backpack adopts high quality nylon fabric and well polished hardware, which is splash-proof and sturdy, ensuring its endurance and protecting inside items from wet, Backpacks for boys Size: L*W*H: 32*18*46cm(12.59*7.08*18.1in). Fits for laptop, A4 magazines, clothes, flask, umbrella, books, wallet, iPad, keys, camera, stationeries and much more. With multiple pockets to classify them, School Bags for boys Energy-saving and anti-slip: The shoulder straps are widened and thickened to reduce pressure and ease your shoulders while the buckle belt could prevent shoulder straps from dropping off, School Backpacks Dissipate heat: Honeybee designed back of the student backpack could dissipate heat, so you won't feel too hot in baking summer while using it, Application: Perfect daypack for school, travel, camping, hiking, backpacking, and daily use, Clip this coupon to save 15% on this product when you buy from Amazon.com. Here's how (restrictions apply), Multiple Pockets, Two Colors for Your Choice, Keep things well organized and easily found., One large main pocket for most of books,lunch bags,pencil case, ipad, binders etc., The second large pocket is designed with many small slots for small notebook, pens, or mobile phone., The third layer also contains a small compartment for some thin items., The front two small pockets for small school stuffs such as eraser,sticky notes.
Product price: $32.99
Product brand: COOFIT
Target attributes: Capacity
Answer: attribute: capacity
value: None
source: None