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: Sloth 3 Mug Mug by CafePress
Product description: Small measures 3.75 tall, 3 diameter; Mega measures 4.5 tall, 3.75 diameterSmall holds 11 oz.; Mega holds 20 oz.Black color-changing mugs available in small only and are heat sensitive. Simply add any hot liquid to the mug and see the mug turn from black to white with your unique design. Dishwasher and microwave safe
Product feature: Measures 3.75" tall, 3" diameter, Dishwasher and microwave safe
Product brand: CafePress
Target attributes: Material
Answer: attribute: material
value: None
source: None