What is a BioCel polyurethane turf backing system and why is it important to your ForeverLawn products? Polyurethane backings are proven performers, preserving resources by extending product life and reducing landfill waste. BioCel polymers are created from soybean plants, which are a 100% renewable resource. Universal Textile Technologies' BioCel backing systems meet or exceed the standards set for indoor air quality, with an added benefit - our products rely on growing thin