Bonded Logic perforated a portion of its UltraTouch Denim Insulation so contractors can pull the batts apart to fit into off-size spaces. Made entirely from used blue jeans, the eco-friendly insulation absorbs sound, does not itch, and comes in four thermal values: R-13, R-19, R-21, and R-30. 480.812.9114. www.bondedlogic.com