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: Pro Feet Shooter 2.0 Socks
Product description: Endurance for the prevention of blisters and added durability in the heel and toe. Sportswear-cool nylon for moisture wicking performance. Polypropylene for moisture management and to provide bacteria/odor resistance.
Product feature: 100% Other Fibers, Made in US, Superior moisture management, Double Welt top for better stay-up performance, Full-cushion foot for shock absorbency
Product price: $2.78 - $17.49
Product brand: Pro Feet
Target attributes: Style
Answer: attribute: style
value: None
source: None