Shop › Rat Wave / Surf's Up Shirt Image 1 of 1 Rat Wave / Surf's Up Shirt $30.00 Rat Wave on Comfort Colors Bay.Chill.Shipping included in the USA, a little more everywhere. Size: Select Size S M L XL 2XL 3XL Quantity: Add To Cart Added! Rat Wave on Comfort Colors Bay.Chill.Shipping included in the USA, a little more everywhere.