GORE-TEX® products are based on GORE-TEX® ePTFE membrane technology. The membrane provides a thin, uniform barrier that can provide properties like waterproofness or chemical resistance. A single square inch of the GORE-TEX® membrane contains 9 billion microscopic pores — each 20,000 times smaller than a raindrop but 700 times larger than a molecule of water vapor — so while water can't pass through the fabric, perspiration can. Integrated into the ePTFE structure is an oleophobic, or oil-hating, substance that allows moisture vapor to pass through but is a physical barrier that prevents the penetration of contaminating substances such as oils, cosmetics, insect repellents, and food substances.
GORE-TEX® fabric is wearable weather protection that keeps you dry and comfortable from head to toe. GORE-TEX® fabric is specifically engineered to form an impenetrable barrier against wind and water while maintaining breathability. The most tested — and most trusted — windproof, waterproof, breathable fabric, only GORE-TEX® outerwear carries the Guaranteed to Keep You Dry® promise.
Gore-Tex®Fabric is Waterproof
No matter how wet the going, no moisture can penetrate through its outer layer, which is why GORE-TEX® fabric carries the Guaranteed To Keep You Dry® promise.
Gore-Tex®fabric is Breathable
The more active you become, the more heat and moisture your body produces. Breathable outerwear and footwear aids your body's natural cooling process by allowing perspiration vapor to escape.
With GORE-TEX® outwear and footwear, you stay dry and comfortable when you're active and there's no perspiration buildup to make you cold.
Gore-Tex® Fabric is Windproof
You can't keep warm when the wind is cutting through your clothing. That's why windproof fabric is so important in guarding against the windchill effect that robs heat from your body's microclimate.
Gore-Tex® outerwear offers full protection from wind so you can extend your outdoor adventures.
Gore-Tex® Fabric is Durable
Unlike some 'technical' fabrics that lose effectiveness with hard use or even washing, the performance of GORE-TEX® fabric is guaranteed for the life of the garment. It's a smart investment in your comfort.
The L2 is a direct result of Simms quest for lighter weight, high-performance products that offer exceptional comfort. 
