Amazon.com: Neoprene Rubber Sheet - 1/8 Inch Thick x 4 Inch Wide x 10 Feet Long Neoprene Rubber Strips Rolls for DIY Gaskets, Pads, Seals, Crafts, Flooring, Cushioning of Anti-Vibration, Anti-Slip :
TRIM-LOK® - 1.1 Wide x 25 Ft. Long, Rubber Part 1 Locking Gasket - 68924653 - MSC Industrial Supply
Versatile Dynamic x shaped rubber bands - Alibababa.com
Courage GymFloor Rubber Gym Flooring Rolls Grey 48 in. x 180 in. x 8 mm (60 sq. ft.) in the Gym Flooring department at Lowes.com
High Quality Silicone Rubber H Cross Band, X Rubber Bands for Binding Book Rubber Products - China Silicone Product, Band | Made-in-China.com