*Free Step One Trucker cap available when buying more than 4 pairs of Step One Underwear. Please select to add Cap to cart at checkout when you have 4 or more pairs in your cart. If the pop-up does not appear or you are unable to add a cap to your cart, the caps have sold out. If you have more than 4 pairs in your cart and the cap is not in your cart, the caps are sold out and the promotion is over. Limit of 1 cap per order, regardless of the number of pairs in your cart. Your order must contain 4 pairs or more to be eligible for a Free Step One Trucker Cap.