Thread and bobbin system prevents seam leakage

The Aqua-Seal™ thread and bobbin system, used in combination, will assist in preventing seam leakage. The patented bobbins repeatedly absorb water to help provide a leak-proof seam, eliminating the need to tape the seam. Non-wicking polyester thread is UV-resistant, colorfast and fade-resistant. Using the Aqua-Seal stitch formation, top thread tension is increased to pull the bobbin thread to the top of the fabric to insure a tight seam.

SOURCE Fil-Tec