Piston Group-backed Irvin Products, a building materials store in St. John, Missouri, agreed to acquire A. Lava & Son, a cover supplier in the North American mattress market. Financial terms were not disclosed. "A. Lava's expertise and industry relationships, combined with Irvin's consumer volume, capacity and investment capabilities, will position us to further diversify and grow revenues outside of automotive and capitalize on the expanding market opportunity in the bedding segment. A. Lava's strong reputation in the bedding market compliments what we have built and grown at Irvin Products since Piston Group acquired them in 2016," Vinnie Johnson, Piston Group Founder, Chairman and CEO.