TENARA THREAD IS GUARANTEED FOR LIFE! This is an 8 oz (1/2 lb) spool of Tenara Sewing Thread. Approx. 1150 yds. Breaking strength 19 lbs. Approximate Yards Per Tube: 1150 Features a unique 3-ply bonded construction. Even the strongest, most durable outdoor fabrics have weak points – the seams. That’s because conventional thread in a seam can become brittle and eventually breaks after prolonged exposure to UV rays. Gore Tenara Sewing Thread is guaranteed to last for the life of the fabric, and it maintains the strength of the seam even under the harshest outdoor conditions. It does not deteriorate, burst or break, despite years of exposure to weather, extreme temperature or chemicals. UV- AND WEATHER-RESISTANT Gore Tenara Sewing Thread is made from expanded polytetrafluoroethylene (ePTEF), a material completely resistant to environmental elements, including harmful UV rays and extreme temperature variations. GORE TENARA Sewing Thread represents only about 3 percent of the total fabrication cost – a small investment for the extra value. Product Note: FOR INDUSTRIAL USE ONLY. Not for use in food, drug, cosmetic, or medical device manufacturing, processing, or packaging operations. DISCLAIMER: Returns on Tenara thread are acceptable if the original seal from factory hasn't been removed and the original plastic is still vacuum sealed. This product is not translucent or transparent.