1.rotomolded polyethylene kayak: Made of high quality polythene PE 2.One-piece rotationally moulded part 3.Low cost The Benefits of Rotational Molding: 1.One-piece, multi-wall construction 2.Economical tooling 3.Captured, threaded inserts 4.Foamed linings 5.Thicker-walled outside corners 6.Relatively stress-free parts 7.Little or no draft angles 8.Weight reduction (as compared to metals) 9.Short lead-time 10.Excellent load-bearing properties 11.Finish and color flexibility