The Youth ThermoBall™ Traction Mule II combines a super-insulated, fleece-lined slip-on with a full-sheet rubber outsole that provides traction, indoors and out. / UPPER/ Upper made with 100% recycled P.E.T. ripstop with a non-PFC durable water-repellent (non-PFC DWR) finish for added water repellency / ThermoBall™ Eco 100% recycled polyester insulation helps keep feet warm even when wet / Collapsible heel with elastic side panels for easy on/off / Cozy fleece lining / SOLE UNIT/ Full-sheet rubber outsole for traction;;Approx Weight/ ½ pair: 94 g - pair: 188 g ||