Through 12/7, shop regular-priced Caterpillar footwear and clothing and apply code HOLIDAYREADY at checkout for 25% off and free socks at Cat Footwear. Shipping is free on every order. Please note that this code does not work for outlet items, and your order must be over $50 to get free socks. For example, the pictured Threshold Waterproof Steel Toe Boots drop from $95 to $71.25. This is the best price by $4. Shop two colors. These boots are waterproof and slip-resistant. Sales tax is charged in most states.