The North Face ThermoBall Traction Mule II – Kids' midlayer The engineered mesh upper locks

The engineered mesh upper locks in your foot without trapping heat — a real advantage in Southern summers

Contagrip MA all-terrain outsole

Smooth-faced fleece construction delivers lightweight warmth that doesn't add bulk under a shell

One-size-fits-most design fits a wide range of head sizes comfortably

The North Face ThermoBall Traction Mule II – Kids' midlayer The engineered mesh upper locksWhen kids need something they can grab and go campsite, backyard, or everywhere in between the ThermoBall Traction Mule II is our pick for young outdoor goers. ThermoBall Eco insulation stays warm even when wet, so damp mornings at the trailhead aren't a problem. A full rubber outsole handles slick floors and light trail alike. ThermoBall Eco synthetic insulation mimics down's warmth clusters keeps feet warm even in wet or damp conditions 100%