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: New Phase Salmon Fly Box- Holds Large Streamers and Flies by Kingfisher
Product description: Large Double Sided Waterproof Fly Box 7 1/2" x 4 1/2" x 1.3/4". Opens from both sides. High density slit foam liners hold your flies tight. Strong durable plastic boxes with positive snap tight latch and stainless steel hinge pins. Rubber water tight gasket seals. Flies are for display only. You are very important to us as a customer, please remember to ask and reach out if you have anything that needs attention before leaving any negative feedback. Please give us the opportunity to help correct any situation that may come up.
Product feature: Waterproof fly box sealed with rubber gaskets on both sides, Long lasting, high density split foam liner, holds your flies securely, Double-sided with plenty of room for your flies - holds up to 363 flies, Tough black ABS plastic lids, great for salmon, steelhead and saltwater flies, Stainless steel hinge pins - won't corrode even for saltwater fishing, snap tight latch
Product price: $9.99
Product brand: New Phase
Target attributes: Style
Answer: attribute: style
value: double sided
source: product description
attribute: style
value: double-sided
source: product feature