These lightweight & highly efficient gloves can be used on their own in cooler conditions or as a liner to boost the performance in extreme weather. They are made with a blend of Merino wool & synthetic Primaloft fibres. Primaloft is better known as a filling for insulated clothing; these gloves use the same ultra-fine fibres to provide exceptional thermal retention, softness & hydrophobic properties. Basically the gloves are very warm, very lightweight, very comfortable & very quick drying. The Primaloft glove features conductive yarn on the index & middle fingers & thumb so you can use your tech & still keep your hands warm. The stretch fabric is soft & comfortable & allows excellent dexterity. Prima Loft Silver Performance Yarn Merino Wool Blend Conductive yarn on index, middle & thumb Stands alone or layers under outer gloves Stretch fit