F5 fabrics are the longest-lasting stretch fabric available today. The patent-pending knitting design (2005) locks the premium yarns - Invista Lycra Soft spandex and Tactel MultiSoft nylon - together so that even under extended wear and washing, the fabric remains intact and continues to perform to standard.

The graph to the left are based on the latest rounds of tests comparing F5 our certified fabric with the 5 leading competitors. All tests were conducted at the University of North Carolina.

Powernet fabrics made of a 1960’s knit design just do not hold up under today’s garment demands. Proven in rigorous laboratory flex-testing, F5 fabric not only outlasts powernet (tested for the standard 20,000 flexes) but even remains physically unchanged after an amazing 60,000 flexes.