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Boost performance and stay warm while doing it in the Zoot CompressRx Ultra Thermal Knicker. This highly engineered, uni-sex capri provides targeted compression for decreased muscle vibration and increased blood flow plus warmth, which results in improved performance while training in cold, harsh environments.


  • Black


  • To determine your size: Measure the widest part of your calf, thigh and waist
  • CRx graduated compression technology speed blood flow back to the heart
  • ZoneRx provides tuned compression to each muscle group and reduces muscle vibration and promotes blood flow into the muscle groups, which improves function and endurance
  • SynchroRx fabric engineered with Silver tech treatment for unmatched moisture management, temperature control, and anti microbial protection
  • New, mid-rise waist for comfort
  • Flat waistband with internal key pocket
  • Unisex sizing


  • SynchroRx Thermal with Silver tech: Body (70% Polypropylene/30% Spandex), hollow core polypropylene yarn keeps warm air close to skin, increasing skin temperature by 11 degrees. Silver tech treatment provides unmatched moisture management, temperature control, and anti microbial protection

Apparel Performance Characteristics

Apparel Fit: What's this?

  • Compression
  • Fitted
  • Semi-Fitted
  • Relaxed

Temperature Range °F: What's this?

  • Cold
    • Below 30
  • Moderate
    • 30-45
    • 40-55
    • 50-65
  • Hot
    • above 65

Fabric Thickness: What's this?

  • Thin
  • Medium
  • Thick

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