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: Brooks PureGrit 4 Trail Running Shoe - Women's
Product description: Skip a walk in the park for a breathtaking dash along the singletrack, by lacing into the Brooks® PureGrit 4! Successor to the PureGrit 3. A minimalist trail-running shoe built for the neutral runner with medium to high arches. Lightweight mesh and textile upper materials. Lace-up closure. Elastic Nav Band wraps the foot for a snug, secure fit. Padded tongue and collar. Soft textile lining offers a great in-shoe feel. Removable foam insole. Full-length BioMoGo DNA features gender-friendly design for adaptive cushioning. Differential: 4 mm Rubber outsole features rugged hexagonal lugs for maximum grip. Omega Flex Grooves allow for more natural forefoot movement and fluidity. Rounded heel encourages better alignment that helps minimize stress on joints. Ballistic rock shield keeps feet protected from stone bruises. Imported. Measurements: Weight: 10 oz Product measurements were taken using size 8.5, width B - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.
Product feature: fabric and Synthetic, Imported, Made in USA or Imported, Shipping Weight: 10.1 ounces ( View shipping rates and policies ), ASIN: B01DFG1P7C, Date first listed on Amazon: March 25, 2016, Average Customer Review: 3.7 out of 5 stars 105 customer reviews
Target attributes: Type
Answer: attribute: type
value: shoe
source: product description
attribute: type
value: shoe
source: product title