Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Royal Robbins Women's Marly Roll-Up Shorts
Product description: The marly roll-up short is the perfect casual comfort pair of shorts. In a super comfortable cotton/spandex blend, the marly has roll-up hem options for when that 8-inch inseam is maybe just a touch too long.
Product feature: 98% Cotton, 2% Spandex, Imported, Roll-up hem option, Garment washed, Welt entry front patch pockets, Buttoned back patch pockets
Product price: $10.33 - $48.58
Product brand: Royal Robbins
Target attributes: Pattern
Answer: attribute: pattern
value: None
source: None