Hair Sponge Brush Patent Pending Simple & Easy Durable Quality Jumbo Size – 7.2” x 4.2” How to get Awesome Curls – Use broad side of the Colier on the top hair. Use narrow side of the Coiler on the side and back The unique design of BT Tornado Coiler Wavy Hair Sponge 12mm Hole #09977 ensures that you get the perfect curl every time. Durable and high-quality, it's the perfect styling tool for busy mornings.hair.