Free Koozie ("Gift") with orders $100+ offer is valid November 1st, 12:01 a.m. EST while supplies last. Gift offer is not applicable to previously made purchases. We reserve the right to cancel any order due to an unauthorized, altered, or ineligible use of offer and to modify or cancel this promotion due to system errors or unforeseen problems. Free Gift is only valid on orders whereby Gift is added to cart at the time of checkout completion. Free Gift is only valid on orders shipped to a single Contiguous U.S address with a total of $100 USD or more. Only one (1) Gift available per order. Only one discount code may be applied to a single order. Free standard domestic shipping is valid on orders of $50 USD or more shipped to a single Contiguous U.S address. Shipping discount automatically applied at checkout. Gift is not covered under Darn Tough Vermont's Unconditional Lifetime Guarantee of socks. Offer is valid only on DarnTough.com.