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: Harley-Davidson Men's Black Label Dark Stitch Short Sleeve T-Shirt Gray 30291526
Product description: Harley-Davidson Men's Black Label Series. Men's #1 Skull Short Sleeve Limited Edition T-Shirt. Features a famous #1 skull stitched logo on the front of this exceptional t-shirt. Made of super soft and comfortable, Superior Quality 100% cotton material. Features no graphic on back. Proudly made in the USA. Our Black Label Collection is comprised of our signature Limited Edition Black Label line of Harley-Davidson gear for men. Won't be around for long, get yourself one before they are gone!
Product feature: 100% Cotton, Harley-Davidson Men's Black Label Limited Edition T-Shirt, Features a famous #1 skull stitched logo on the front of this exceptional t-shirt, Made of super soft and comfortable, Superior Quality 100% cotton material, Proudly made in the USA, Won't be around for long, get yourself one before they are gone!, Shipping Weight: 12.8 ounces ( View shipping rates and policies ), ASIN: B07D1TWGKV, Item model number: 30291526, Date first listed on Amazon: June 5, 2014, Average Customer Review: 3.8 out of 5 stars 8 customer reviews
Product price: $24.95 - $26.95
Product brand: Harley-Davidson
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: short sleeve
source: product title
attribute: sleeve style
value: short sleeve
source: product description