Men's Instinct 4.5

55.00 110.00

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Altra's original road shoe has been upgraded! The Altra Instinct 4.5 features a brand new engineered mesh upper and updated midsole for comfort and durability. The outsole is now full rubber for enhanced durability, and the insole is one piece for a better underfoot feel. Hit the road or the race course in Altra’s original style. 


  • Footshape Toe Box
  • Zero Drop Platform
  • A-Bound
  • Innerflex
  • Footpod Outsole
  • Stack Height - 25mm
  • Midsole - EVA with A-Bound top layer and InnerFlex
  • Outsole - Full rubber
  • Insole - 6 mm Contour Footbed
  • Upper - Color-blocked engineered mesh with 3D printed pinstripes
Size Guide
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