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

Input:
Product title: LIVEBOX Newborn Baby Girls' Cotton Premium Soft Sole Sneaker Infant Prewalker Toddler Shoes
Product description: Item Type: First Walkers Size: Fit For 0-18 Months Baby? Season: Spring, Summer, Autumn Gender: Baby Girls?, Note: The recommended age is just for your reference,Please measure your baby's foot length to choose the right size for your baby because of the different measurement methods, there may be 1-2 cm of the allowable range error.?, Besides there might be slight color deviation due to different displays.?, Package includes:1 pair of shoes?
Product feature: Cotton, 100% soft baby friendly cotton, safety tested for peace of mind., Classic, high quality cotton with soft soles and elastic openings to help keep them on., Soft, lightweight and anti-slip sole is well-crafted to make walking feel natural., Makes a perfect baby shower, birthday present or "just because" for your very own little love., 100% Satisfaction Guaranteed Zero Hassle Returns - Return your shoes for any reason., Package Dimensions: 7 x 5.8 x 3.1 inches, Shipping Weight: 3.2 ounces, ASIN: B0152GP2IG, Date first listed on Amazon: September 8, 2015, Average Customer Review: 3.0 out of 5 stars 4 customer reviews
Product brand: LIVEBOX
Target attributes: Silhouette
Answer: attribute: silhouette
value: None
source: None