What Our Gearhead(R) Experts Are Saying:"I have been sliding into the THERMOBALL Traction Mule Knit after long days at the crag and around camp, and the Oso fleece collar and THERMOBALL insulation make them genuinely warm without feeling stiff or bulky. The Joshua Tree topographic knit is a legitimate conversation starter, and the collapsible heel means I can go from tent to trail kitchen in about half a second."The best footwear for after the climb is the kind that slides on without thinking and stays comfortable long after the rope is coiled. The North Face THERMOBALL Traction Mule Knit Bootie was born at base camp and built for exactly that moment, delivering the warm, packable slip-on comfort that makes the end of a hard day feel like a reward. THERMOBALL recycled polyester insulation keeps feet warm even when conditions are damp, and an Oso fleece collar wraps the ankle in a soft, cozy layer that makes pulling these on feel immediately satisfying. What makes this version worth a second look is the 3D terry cloth-like knit upper, rendered in an intricate topographic design that maps the iconic climbing geography of Joshua Tree National Park. It is a limited edition release that carries real meaning for anyone who has logged days on the park's granite faces, and looks equally at home on a coffee shop run or a weekend errand circuit. A collapsible heel with elastic side panels makes entry effortless, whether our hands are full or the morning is moving fast, and an outsole built with up to 20% recycled rubber keeps the construction as considered as the design. Lightweight and packable enough to stuff into a duffel, these are the mules that earn a spot on every trip.