Shipping Info:


Item #: 332850887

Built in the Merrell Test Lab where our most technical innovations are born, the Merrell Women’s MTL Astrum Trail Running Shoes with snow-stopping collar radiates body heat back toward the foot and features snow tire-inspired Vibram® lugs that grip on mixed winter terrain.


  • M Select™ SHIELD treatment resists water
  • A more responsive compression molded EVA midsole for increased energy return and comfor
  • TrailProtect™ rock plate protects feet from underfoot debris
  • Triple-density Vibram® outsole inspired by multi-density snow tires for all-around grip on snow, ice, slush, & mud
  • Heat-reflecting upper and insole technology radiates body heat back toward the foot
  • Lycra® neoprene stretch collar for easy on and off
  • Speed lace for quick, secure fit
  • Vegan friendly


  • Drop: 6mm; stack height (heel/toe): 30.7/24.7mm; footbed 6.5/4.5mm; insole: 2mm; midsole: 16/10mm; sole: 1.2mm web, 5mm lug
  • FLEXconnect™ dual-directional flex-grooves
  • Synthetic and textile upper
  • Mesh and Lycra® lining
  • Vendor Style Number: J12870