Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Ruggan Slim Convertible Laptop Backpack up to 14 Travel Bag Notebook Computer Anti-theft with Padlock
Product description: Smart design fits 13 and 14 laptops, side pockets, pockets for wallet, cell, etc. Slightly padded straps High quality material lightweight, water resistant 3-digit padlock included, We Take Great Pride in Introducing the Next Generation of Laptop Backpacks, If youre looking for a versatile laptop backpack with extra-pockets that is both comfortable and secure, your search is finally over. Our smart backpack has unique features that make it a must-have accessory for your laptop., Lets Take a Look at These Features!, Slim and lightweight, which makes it the ultimate choice for urban use Smart design that will help you keep your stuff organized Patented double zipper that takes security and reliability to a new level Main compartment zippers provided with special rings that can be locked by a padlock (provided) for extra-safety Separate padded laptop compartment to maximize safety and accessibility Slightly padded shoulder straps for superior comfort., Order Now and Carry Your Laptop Safely!
Product feature: SMART DESIGN & SLIGHTLY PADDED STRAPS Stylish mini rucksack with lots of pockets, inside organizer, side pockets for water bottle or umbrella, padded dedicated laptop compartment at the back, headphone exit, a lot of pockets for your accessories, HIGH QUALITY MATERIAL AND ZIPPERS - Our cute slim thin expandable backpack for laptops with the screen under 14 inch (13 and 13.3 inch laptops) is made of lightweight durable water resistant nylon material that can easily be cleaned with wet cloth. All zippers open and close smoothly, are lockable and extra safe, WIDE RANGE OF USAGE: This is a unisex casual backpack for daily urban commute, travel, office, business, college, school and outdoors. It is convertible into a messenger bag. It fits both men and women, ladies, executives, teen girls and boys. Its airport checkpoint friendly and could be easily used as a carry on., OUR PROMISE: All our products are supported by full customer satisfaction promise: we either refund your purchase or ship you a replacement if your backpack fails during a 6-month period after it was delivered to you., 3-DIGIT COMBINATION LOCK: sized 2.1 x 1.1 x 0.4 inches, included in the bundle helps to keep your belongings inside the backpack secure.
Product brand: Ruggan
Target attributes: Capacity
Answer: attribute: capacity
value: None
source: None