Rab's Power Stretch Grip Gloves use a soft and warm fabric that is super comfortable due to it's stretch properties. The brushed lining insulates well but also wicks sweat away and helps to stop your hands from overheating. 

Rab says:

Lightweight and quick-drying Polartec Power stretch glove with grippy silicon palm.

Lightweight glove ideal for use as a low bulk liner or as a stand alone hill and mountain use.

Polartec Powerstretch - Feature body hugging 4-way stretch and are very breathable. They keep you dry when you sweat and provide warmth without weight. These are the most versatile outdoor and fitness clothing fabrics available today.