2015 Jayco White Hawk 20MRB, 2015 White Hawk 20MRB Ultra Lite Travel Trailer. 2015 Jayco White Hawk 20MRB Boasting 36" deep slideouts in our Summit Edition models, the 2015 White Hawk is unlike any other ultra lite. With twice the expandable living space and arched interior rafters, your family will love our Summit Edition, a top-of-the-line spacious retreat. And for those looking to load up on fun without weighing yourself down, select White Hawk models are towable by most SUVs*. So go light. We'll only go heavy on the fun.