Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Epokris Gray Backpack for Girls Floral Backpack Book Bag for Girls Daypack Flower Backpack for little Girls 163GY
Product description: Material:Eco-friendly cotton canvas & faux leather color options: blue,beige,brown,blue star,little star,grey blue occasions: school .work .outdoor, daily use Features: What you can put in this laptop backpack? - You can put 2-3 clothes, A4 books, 14" laptop, ipad, glasses, wallet, keys, earphone, power bank, cell phone and document in the bag. 1. 100% premium cotton canvas. 2. PU leather accessory and nice soft canvas exterior. 3. Durable top handle and adjustable shoulder strap. 4. Fashion vintage design, well sewn craftsmanship. 5. Hand wash with cold water. Note: - Due to monitor's brightness, there could be slight differences in the color tone of the pictures and the actual item. Package: 1 x Canvas Backpack How to maintain the backpack? - Wash it with clean water in ordinary temperature. - DO NOT wash it in hot water and alkaline detergent. - Hang to dry and store in ventilated place instead of sun exposure. - Wash Separately to avoid staining.
Product feature: Dimension: Approx. Length11 xWidth 6 x Height 14.6 inch, Weight: 1.8pound., Durable and sturdy canvas backpack with faux leather accessory., Single carry strap at the top with two adjustable shoulder straps., Spacious main compartment can hold books, clothes, or other daily essentials., Interior back wall zip pocket and a key clasp, the interior laptop sleeve easily fits a 14-Inch laptop. 3 exterior zipper pockets for other storage ,
Product price: $2.60
Product brand: Epokris
Target attributes: Material
Answer: attribute: material
value: canvas
source: product feature
attribute: material
value: canvas
source: product description