Super 10mm Carpet Underlay - 15sqmStep up comfort and performance with reliable, everyday underlay. Super 10mm Carpet Underlay adds noticeable cushioning underfoot and helps your carpet feel more supportive, warmer, and longer lasting. At a comfortable 10mm thickness, this underlay delivers a great balance of softness and stability. It boosts insulation to keep rooms warmer, and provides dependable sound reduction all while helping your carpet wear more evenly over time. 10mm