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: Dr. Scholl's Women's July Flat
Product description: You'll be quick on your feet in the July slip-ons from Dr. Scholl's. Fabric upper in a casual slip-on style with a round toe. Ruched details at the toe. Elastic gored instep strap. Free Step minimalist construction creates a natural foot strike. Textile lining, cushioning insole with Energy Wave technology. Rubber traction outsole., From the moment its iconic exercise sandals hit the shelves in 1968, Dr. Scholl's has been a brand synonymous with comfortable footwear and healthy feet. Today, Dr. Scholl's offers footwear in a variety of fashionable styles that range from casual to elegant, to fun and funky. Dr. Scholl's continues its tradition of using the latest podiatric medicine and research to revolutionize the way Americans think of, and care for, their feet.
Product feature: 100% Fabric, Imported, Synthetic sole, Fabric upper, Rubber outsole, Textile, B4840F4600, B4840F3250, B4840F7402, Package Dimensions: 12.4 x 6.8 x 4.4 inches, Shipping Weight: 11.2 ounces, ASIN: B008JKZJMC, Item model number: July, Date first listed on Amazon: January 5, 2013, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 3.6 out of 5 stars 38 customer reviews
Product brand: Dr. Scholl's Shoes
Target attributes: Shaft Height
Answer: attribute: shaft height
value: None
source: None