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: KAVU Lummi Backpack
Product description: Constructed of 600D polyester, oversized YKK zippers with nickel sliders, sewn-on zipper pulls, bound seams, bar tacking at stress points and a limited lifetime warranty.
Product feature: Two compartment design with adjustable padded shoulder straps and back panel, One side mesh pocket and interior security zipper pocket, Detachable key clip, Dimensions are 17" x 13" x 7"
Product brand: KAVU
Target attributes: Type
Answer: attribute: type
value: None
source: None