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

Input:
Product title: IYUEGO Modern Classic Brown Solid Floral Embossed Blackout Grommet Top Curtain With Multi Size Custom 42" W x 84" L (One Panel)
Product description: TOP CONSTRUCTION GUIDE: For Grommet, the inside diameter of Grommet is 1.6", around 6-8 grommets in a 40 inches wide curtain. The grommet ring is nickel in silver. Ring color custom unacceptable. For Tab top, the height of tab is 4" (10cm). There are about 6-8 tabs in a 40 inch wide curtain. For Rod Pocket, come with 2" header, and the height of pocket is 3" (8cm) to ensure the rod could pass through. For the Double Pleated, there are around 6-8 pleats AND firm plastic hooks in a 40 inches wide curtain. Come with firm plastic hooks. If say the width is 84 inches in the size list, for double pleated, that means the panel width at the top with 6-8 pleats already set in the panel. MEASUREMENT INSTRUCTION: For grommet and tab top curtain, measure the drop from the top of pole to where you want curtain to finish. For Pleated top construction, measure the distance from the eye where the curtain hooks attched to where you want your curtan to finish. For rod pocket, measure the distance from the top of pole to where you want curtain to finish. Curtain Width: We suggest You choose a curtain width 2 times wider than the width of the pole or tacck to create folds. For example, if the pole or track is 42 inches, then select a curtain width of 84 inches or 2 panels 42 inches each. Top Construction: Grommet Top Features: Energy Saving Color: As Per Picture Fabric Type: Polyester Crafts: Jacquard Fabric Weight: 250 gram/square meter (Medium) Includes: 1 Panel Care Instruction: Machine Wash, Do not Bleach, Warm Iron
Product feature: Polyester & Polyester Blend, Imported, Thermal insulated blackout curtains, blocks out of 100% light and 100% UV ray. Classic brown color embossed with flower texture. Reduce outside noise and enjoy a quiet and peaceful environment - save on home heating and cooling costs, Sold as single panel, machine washable, color may vary slightly from picture because of light or monitor, Grommet has 1.6-inch inner diameter, 100% stainless steel, silver color. Curtain length measure from rod top to the place where to finish, curtain width should be 1.5-2 times of rod size to create fullness, All Curtains are customized for any size and top constructions, BUT some size are Fulfilled by Amazon which is ready made in Amazon warehouse can not be customized, If you need custom curtain, please send us email before order, tell us what size and top construction you want then we will give you price and link to order. Our custom service is free.
Product price: $26.99
Product brand: IYUEGO
Target attributes: Light Allowance
Answer: attribute: light allowance
value: blackout
source: product feature
attribute: light allowance
value: blackout
source: product title