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: Chinese Laundry Women's Keeper
Product description: This shoe's a Keeper, thanks to its strappy suede upper and studded platform. From Chinese Laundry, the shapely sandal sports a daring stiletto heel to lend you a lift. Match this shoe with your most daring going-out outfits., Chinese Laundry launched in 1982 with a collection of fashion forward footwear targeted to the young women's market. From stylish daytime looks in innovative fabrics and leathers, to evening collections in dressy metallics and iridescents, Chinese Laundry continues to create and deliver style and fashion at an affordable price. Chinese Laundry has carved a niche for itself in today's competitive market and is available in better department and specialty stores nationwide.
Product feature: 100% Suede, Synthetic sole, Heel measures approximately 5", Platform measures approximately 1 1/4", Package Dimensions: 12 x 8 x 4 inches, Shipping Weight: 2 pounds ( View shipping rates and policies ), ASIN: B003EXNF9I, Item model number: Keeper, Date first listed on Amazon: September 21, 2010, 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 price: $37.99
Target attributes: Silhouette
Answer: attribute: silhouette
value: stiletto
source: product description