Warmth when you need it. Breathability when you push.
108 grams of FuzzFleece™ AD — active insulation built for motion and recovery. The go-to layer for post-run cool-down, early morning miles in Flagstaff or Payson, and those winter mornings in the Valley when the desert air surprises you.
The Technology
Engineered with Polartec® Alpha® Direct, FuzzFleece™ AD puts lofted insulating fibers directly on a breathable mesh core — holding warmth without weight, moving with you instead of against you.
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Adaptive insulation — Warm at rest, breathable under effort. Transitions with your pace and temperature
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Hydrophobic construction — Wicks, dries fast, and keeps insulating even when damp from sweat or trail moisture
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108g total weight — Packable protection that earns its place in your kit without slowing you down
Throw it on after the finish line. Pack it for the trails above the Rim. Wear it through winter sunrise runs when the desert has other plans.
Unpredictable conditions. Steady warmth.
