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: Dakine Men's Overhead Luggage, Black
Product description: The benchmark in wheeled luggage, The Overhead by DaKine features a split-level design for easy loading and unloading, Based in Hood River, Oregon, DAKINE was founded in Maui, Hawai'i in 1979 by longtime surfer, Rob Kaplan. DAKINE'S first product, a revolutionary new surf leash, quickly gained worldwide popularity. This first leash led to more surfing related products, built to withstand the punishing conditions of the surf on the north shore of Hawai'i. In Hawaiian slang, "Da Kine" means the best and the company has lived up to this standard through attention to detail, focus on accessories, and a notoriously thorough design process., With its reputation for top quality products and attention to detail, DAKINE quickly grew beyond its surfing roots and has become the standard in board sports accessories for the top athletes in the worlds of snowboarding, skiing, skateboarding, mountain biking, windsurfing, and kiteboarding, as well as surfing., To better serve the growing worldwide demand for DAKINE product, a factory and distribution center were opened in Hood River, Oregon in 1986 and the facility soon replaced operations on Maui's north shore to become the principal factory and point of distribution. DAKINE's Oregon location, in the heart of the Gorge and the base of Mount Hood--a hot spot with North American windsurfers and snowboarders--also helps the company maintain its competitive edge by giving the product development team a demanding new environment for developing and testing products. A testament to the standards and success of DAKINE product, the pro team roster reads like a who's-who of action sports., Today, DAKINE offers a complete range of innovative products, including sport-specific and street-savvy backpacks, bags, travel gear, and accessories as well as a fashionable girl's bag collection. The company remains focused on building durable, innovative products of the best quality for the most demanding action sports athletes. The original quest led by a group of dedicated surfers has taken on a life of its own and has spread throughout all board sports. For 30 years, this passion has given DAKINE its longevity in the action sports industry and has personified its reputation for excellence.
Product feature: High quality urethane wheels, Legal carry on size for most airlines, Retractable handle, Split level design allows for easy access, Product Dimensions: 13 x 8.7 x 20.9 inches, Shipping Weight: 5.9 pounds, Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply., ASIN: B001D2T2N0, Item model number: 8300-270-29-Black, Date first listed on Amazon: July 27, 2008, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 3.0 out of 5 stars 1 customer review
Product brand: Dakine
Target attributes: Mobility
Answer: attribute: mobility
value: wheels
source: product feature
attribute: mobility
value: wheeled
source: product description