All the protection you need without you knowing it.
- full-zip
- YKK waterproof zippers (proven to last)
- RainShield fabric protector (repels water and stains while maintaining breathability)
- zipper tunnels (further protect against leakage)
- locking zipper pulls (keep zipper pulls secured and out of the way)
- shoulder gussets (improved freedom of movement)
- inside chest pocket
- interior storm flap (added protection)
- stretch-taped seams (waterproof and flexible)
- tricot liner (for comfort and motion)
- external chest pocket (keeps scorecards dry)
- waterproof side pockets
- adjustable flat front waist
- adjustable cuffs
- Rentex collar (fray resistant and soft)
- 2-year waterproof guarantee
RainFlex
Fights the elements. Not the swing.

STRETCHABLE
RainFlex garments are produced through a knitting process which allows
incredible stretch where it is needed in a golf garment. It stretches 100%
across the shoulder, 30% top to bottom and 100% in four directions of bias.
Woven nylon garments have almost zero stretch.
BREATHABLE
RainFlex is the most breathable, truly waterproof garment we've ever worn.
Independent lab testing shows a vapor transmission rate seven times the minimum
requirement.
COMFORTABLE
RainFlex garments are extremely lightweight, and entirely stretchable and
breathable. Silky tricot liners allow the inner and outer layers to move and
slide independently across your body.
FUNCTIONAL
Sun Mountain's knit fabric is only part of the story. Waterproof zippers keep
things dry. All seams are sealed with flexible tape. Every fabric panel is cut
for performance; every detail contributes to function.
WATERPROOF
100% waterproof means you won't get wet. RainFlex is twice the minimum
waterproof standard. All RainFlex garments are guaranteed waterproof for two
years from date of purchase.
WINDPROOF
RainFlex is windproof in addition to waterproof. This, combined with its quiet
and comfortable nature, makes it a great all-in-one layer.
QUIET
RainFlex is quiet because it is a soft, pliable knit that moves with no
resistance. Woven fabrics, when made waterproof, are boardy and noisy in
comparison.