LOW ODOR, CURES IN SECONDS, GUARANTEED TACK-FREE WHEN CURED WITH OUR SOLAREZ UV LIGHT SYSTEMS! FLEX Formula Flexible finish for swimmers, flex parts - could be used as a wader repair Great for coating knots for strength Viscous formula, easier to work with Usage tip:Apply in shade. Irradiate with intense UV light for FIVE SECONDS. Wait 15 seconds. Irradiate again for FIVE SECONDS. Wait. Do this a few cycles. Complete with 2 minutes continuous UV light. This technique will reduce heat & shrinkage. The FLEX formula requires more light than the THIN, MEDIUM or THICK. This technique will reduce heat & shrinkage.