Feetures Merino 10 Ultra Light Cushion No-Show Tab Running Socks combine Targeted Compression and anatomical design with a distinct blend of Merino wool and Tencel fibers to create a more advanced merino sock. Targeted compression at the arch 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 10 insulates when wet—keeping your feet warm in wet, cool conditions. The Perfect Toe (No irritating toe seam.) No Show Tab height sits below the ankle for maximum versatility.