Bridgedale merinofusion summit socks bridgedale merino fusion technology brings merino wool together with technical fibres to provide balanced insulation with a high levels of comfort merino wool is a fine wool used in socks giving insulation and next to skin softness whilst the technical fibres rapidly transport moisture away from the skin leaving your feet feeling dry and comfortable this technology is the ideal choice for travellers and hikers in the wild places of this planet designed for co