Able to maintain temperatures between 70° and 80° F, the PowerBlanket is a heated curing system that also can prevent ground freezing and maintain moisture in fresh concrete. The blanket leads to psi increases of up to 135% over 2-inch foam curing blankets. As many as four blankets can be plugged together. Made of reinforced, 14.8-ounce vinyl, they are lightweight, waterproof, easy to move and store, and plugs into any 110-V circuit. PowerBlanket LLC. 877-927-6432.