Marine Welt Piping Upholstery Trim to sew fabric panels together. This is premium, high quality, commercial grade, professional grade, marine vinyl welt. This Marine Welt is Sunlight Resistant. Bry-Tech Marine1 brand vinyl welt meets or exceeds the higher standards required for outdoor use. This "Bry-Tech Marine1" brand welt is perfect for re-upholstering boat seats, pontoon boat seats, ski boat seats, jet ski seats, patio furniture, sun-room furniture, 4 wheeler seats, ATV seats, spa, motorcycle seats, home sofa cushions, snow mobile seats, automotive seats, automotive seat covers, auto seat covers, auto door panels, car seats, truck seats, residential, home sofa cushions, home sofas, home seat cushions, bar stools, restaurant booths, restaurant furniture, hospitality, contract, automotive, RV, boat hull liner, headliner, any indoor or outdoor application that might be exposed to the sun and moisture. Construction: PVC Vinyl Face with Polyester Back The material is sold by the yard. We have taken the guesswork out of matching colors on marine vinyl fabric, with the "Bry-Tech Marine1" brand. The "Bry-Tech Marine1" brand uses the same colors choices for: 1. Flat (smooth) Marine Vinyl fabric 54" wide, by the yard 2. Pleated Marine Vinyl fabric 54" wide, by the yard 3. 1/4" Foam Back Marine Vinyl fabric 54" wide, by the yard 4. Marine Hidem, (to hide staples) by the yard 5. Marine Welt, (to sew panels together) by the yard 42 Colors available Example: Bright Red Bry-Tech Marine1 Pleated Marine Vinyl fabric is the same color, as Bright Red Bry-Tech Marine1 Marine Hidem, is the same color as Bright Red Bry-Tech Marine1 Marine Welt, Etc.. Using these items together, on the same job, allows you to match colors. This gives you high quality, professional results.