Patented Sock-Lock Technology to provide targeted compression where it's needed most. Anatomical design enhances fit, delivering maximum comfort and protection by eliminating blisters. Ultra thin construction takes up minimal room inside the shoe. Merino+ fibers wick moisture to keep feet dry and odor-free. Merino+ insulates when wetÃƒ¢Ã¢â€š¬Ã¢â‚¬keeping your feet warm in wet, cool conditions.