COZA® Insulation Features Comfort You Can Feel During times of rising energy costs, COZA® cellulose insulation is the smart choice over other insulations. It not only provides excellent R-Value*, but when installed properly, also blocks air infiltration, the "secret culprit" of high energy costs. COZA® provides a safe, solid blanket of protection for walls and attics. It's soft texture can be held in your hands. COZA® is comfort you can feel! *The higher the R-Value, the greater the insulating power. Ask your seller for the fact sheet on R-Values.