Layering is the key to comfortable trekking and when you can't quite decide between a fleece and a t-shirt you'll want to put on the Nimble Gilet. Thanks to sweat-wicking, quick-drying FlashDry™ technology you can still maintain your pace without a wet back. And for when the wind picks up or a shower tries to force you to switch to a jacket, you'll be glad it's engineered with WindWall™ - that completely blocks out wind - and finished with a durable water repellent treatment.