The Under Armour Driver Rain Men's Cap is a premium waterproof stretch-fit cap engineered for golfers and athletes who refuse to let the weather call the shots. Built around the brand's industry-proven UA Storm technology and a fully bonded 2.5-layer construction, this cap delivers genuine 100% waterproof performance without the stiff, uncomfortable feel of traditional rain gear. Whether you're on the fairway in a downpour or commuting on a wet morning, the Driver Rain cap keeps you looking sharp and feeling dry.
UA Storm is Under Armour's signature water-repellent technology applied directly to the fabric during manufacturing. The finish causes water to bead and roll off the surface rather than soak through, maintaining the integrity of the cap even during prolonged exposure to rain. Critically, UA Storm achieves this level of protection without sealing off the fabric entirely — airflow is preserved so heat and moisture vapour can still escape, preventing that clammy, overheated feeling common with purely impermeable outerwear. The result is a cap that is genuinely light and nearly weightless, shrugging off the rain while remaining comfortable throughout your round or workout.
Where UA Storm handles surface water repellency, the 2.5-layer bonded construction takes protection to the next level. The outer face fabric and a partial inner membrane are bonded together without a loose lining, producing a cap that is certified 100% waterproof. Every seam is fully taped on the inside, eliminating the needle-holes that would otherwise allow water to wick through stitching — the weakest point in most rained-upon caps. This combination of bonded layers and taped seams means the Driver Rain cap can withstand sustained heavy rain, making it reliable headwear for genuine wet-weather use, not just light drizzle.
Under Armour has moved away from PFAS-based (per- and polyfluoroalkyl substances) durable water repellent (DWR) treatments on this cap, instead using a fluorine-free alternative that delivers effective rain repellency with a significantly lower environmental impact. Fluorine-free DWR formulations break down more readily in the environment and do not leave persistent chemical residues in ecosystems or the human body. Choosing the Driver Rain cap means you can stay dry on the course while supporting more responsible manufacturing practices — performance and sustainability working together.
The Driver Rain cap uses a stretch fit construction — meaning there is no rear adjustment strap or snapback closure to fiddle with. The cap's fabric and structure are engineered to flex and conform naturally to a wide range of head shapes and sizes, providing a snug, secure fit that stays in place during dynamic movement without feeling restrictive. The built-in elastic sweatband on the interior perimeter adds another layer of comfort: it stretches in harmony with the cap itself and incorporates moisture-wicking properties that pull sweat away from the forehead, keeping you focused on your game rather than discomfort caused by perspiration.
| Specification | Detail |
|---|---|
| Style Code | 1386644-001 |
| Gender | Men's |
| Type | Stretch Fit Cap (round peak / structured) |
| Colour | Black / Metallic Silver |
| Material | 100% Polyester |
| Construction | 2.5-layer bonded fabric, fully taped seams |
| Water Resistance | 100% Waterproof |
| Technology | UA Storm water-repellent treatment (fluorine-free DWR) |
| Fit | Stretch fit — no adjustment required |
| Sweatband | Built-in stretchy elastic, moisture-wicking |
| Available Sizes | S/M · M/L · L/XL · XL/XXL |
| Branding | Under Armour logo on front and side |
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