A waterproof jacket is a system - membrane, seam tape, and testing working together
A waterproof jacket is a system and seam sealing is a key part of making that system work. That's why Gore has also focused on seam-sealing technology since 1979, when GORE-SEAM® Tape was developed to protect stitch lines from water penetration.
The membrane is designed to keep water out. The seam tape is designed to keep stitched areas sealed. Together with Gore's quality management approach, they form the foundation of waterproof performance in GORE-TEX® branded products. Explore how GORE-TEX® products are tested - from membrane to seams to finished garment - at gore-tex.com/testing. Eligible GORE-TEX® products with the Black Diamond hang tag are backed by the GUARANTEED TO KEEP YOU DRY promise.
Further information on testing methods and garment construction principles used for GORE-TEX® branded products is available on the GORE-TEX website. Eligible GORE-TEX® products with the Black Diamond hang tag are also covered by the GUARANTEED TO KEEP YOU DRY promise, which applies under defined conditions of use. 
See frequently asked questions or learn more about the GUARANTEED TO KEEP YOU DRY promise.
About Gore Fabrics
Gore introduced GORE-TEX® Fabric to the outerwear industry more than 45 years ago and continues to develop performance apparel technologies. Gore's Fabrics products provide comfort and protection in challenging environments and in everyday life, enabling wearers to safely and confidently achieve and experience more. From hiking in downpours to defense operations and fighting fires, Gore’s deep understanding of consumer and industry needs drives development of products with meaningful performance advantages.
https://www.gore-tex.com and https://www.goretexprofessional.com/
About Gore
W. L. Gore & Associates is a global materials science company dedicated to transforming industries and improving lives. Since 1958, Gore has solved complex technical challenges in demanding environments - from outer space to the world’s highest peaks to the inner workings of the human body. With more than 13,000 Associates and a strong, team-oriented culture, Gore generates annual revenues of $5 billion.
For more information, visit gore.com.
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Products listed may not be available in all markets.
GORE, GORE-TEX, Together, improving life and designs are trademarks of W. L. Gore & Associates.
© 2026 W. L. Gore & Associates, Inc.
Gore Fabrics Business Media Contacts
Molly Cuffe
W. L. Gore & Associates
[email protected]
Monika Lischke
W. L. Gore & Associates
[email protected]
