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: Skechers Men's Relaxed Fit Landen Steller,Charcoal,US 13 M
Product description: Take it easy in casual style and super comfort with the SKECHERS Relaxed Fit: Landen - Steller shoe. Soft woven canvas fabric upper in a slip on casual comfort loafer with stitching and overlay accents. Memory Foam insole. Side S embroidered logo. Smooth contrast colored faux leather collar trim. Dual side elastic fabric panels for easy slip on fit. Padded collar. Soft fabric shoe lining. Relaxed Fit design for a roomy comfortable fit. Memory Foam full length cushioned comfort insole. Shock absorbing lightweight flexible midsole. Flexible traction outsole.
Product feature: canvas, Fit: True to Size, Upper: Soft Woven Canvas Fabric, Features of this item include: Canvas, Memory Foam, Twin Gore, Package Dimensions: 14.6 x 10.2 x 5.1 inches, Shipping Weight: 1.85 pounds, ASIN: B00UNRMYJK, Item model number: Landen-Steller, Date first listed on Amazon: March 23, 2015, Average Customer Review: 1.0 out of 5 stars 1 customer review
Target attributes: Style
Answer: attribute: style
value: casual
source: product description