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This product is no longer available, but don't go just yet.


  • Made of soft, 100% polyester Polartec® Classic 100 microfleece
  • Back zippered pocket
  • Elastic drawcord waist
  • The Marmot Reactor pants have a regular fit for everyday comfort


View all Marmot Men's Fleece Pants

REI membership


Best Use Multisport
Fabric Polyester fleece
Inseam (in.) 32 inches
Gender Men's
Average Weight 10 ounces

Size chart

Sizing notes

TALL: Some pants, shirts, jackets and parkas are available in tall sizes, which generally means an inseam that is 3 inches longer and a rise that is 1 inch longer, a shirt or jacket body that is 2 inches longer, a parka body that is 2.5 inches longer and sleeves that are 2.5 inches longer than regular sizes.