Sixs - TS4 FF Long Sleeve Mock Turtleneck Jersey Merinos WoolA long sleeve mock turtleneck jersey in Carbon Merinos Wool with a membrane to shield against wind and repel water, to protect you against cold gusts of wind. Ideal for use as underwear or as an intermediate layer. The polypropylene layer that is in contact with the skin prevents accumulation of perspiration, providing unmatched comfort. The merinos wool (one of the natural fibers with the highest insulating capabilities) is properly placed in the