American Poly Pipe Company, 1/4" x 100' Blank Drip Tubing Manufactured using an advanced modified linear low density (LLDE) polyethylene material. Tubing acts like a vinyl tube, but has the working pressure and the strength of a polyethylene tube. The Relax-O tubing formula is designed to relax quickly when unrolled in the sun and not retain the memory of being coiled like other brands.