Whether mountain running, biking or climbing, high quality, comfortable clothing can massively enhance the experience and allow you to focus upon your sport and not what the weather is trying to do to you. In all active-use outdoor situations the essential requirement of comfortable clothing is to prevent the weather entering your clothing, and at the same time allow your sweat and excess body heat to easily escape.
By reducing weight and pack size of all MONTANE clothing to the lowest achievable levels, the outdoor experience is further enhanced. Less energy is wasted carrying your clothing and more space is available for other essential items like food or equipment.