Bosal brand Katahdin On-A-Roll. Triple-carded, needle punched 100% organic cotton blend batting, cut in 2.5 in. wide strips and on a 50 yard long roll. No pre-shrinking is required, includes no scrims or resins. Katahdin On-A-Roll Batting can be used with the Jelly Roll Rug pattern by RJ Designs and the Jelly Roll Sasher (pattern and tool not included) to create your own custom oval area rug.