There are three critical design elements used to achieve the perfect fit: the Dynamic Top Cup, the Heel Lock, and the Full Contact Cuff. In combination, these three elements give you a sock that fits your foot at all points. No chafing. No Hotspots. No slippage. That's the perfect FITS Full Contact Fit. Only FITS has it.
DYNAMIC TOE CUP - FITS socks conform to the natural shape of the toes for a close, individual fit. That means there is no extra fabric to cause chafing. The top stitching is placed perfectly so there are no hotspots.
HEEL LOCK - The Y-shape stitching creates a deep pocket that locks in the heel. That means the sock keeps its shape and stays put.
FULL CONTACT CUFF - Keeps the socks hugging your leg. FITS socks stay in place all day for ultimate comfort.