Whether you're having a go at the Grand Wall in Squamish, BC or simply headed out for some bouldering practice in your local urban oasis The North Face Ampere Wind Trainer Jacket will keep the breezes at bay thanks to TNF's WindWall® technology that allows a limited degree of external air permeability, drastically reducing the effects of windchill and enhancing your warmth and comfort. Its face fabric with a versatile DWR finish feels like a second skin, while a media port allows you to dial in the tunes and keep motivation steady.