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The Pearl Izumi Ultra Inside-Out Singlet combines the tried and true "ultra" performance features with PI's advanced comfort technology: ideal for long distance training (when next to skin comfort is essential), an "inside-out" seam construction delivers ultimate chafe-free comfort while you run. Ergonomic seamlines allow for increased range of motion, mesh panels provide breathability, while shoulder abrasion print helps to keep your pack straps in place. 


  • Electric Blue (3UU)


  • Transfer-Dry fabric for moisture wicking and odor absorption
  • Inside-out seam construction places seams away from the skin for chafe-free comfort
  • Shoulder abrasion print to help keep your pack straps in place
  • Mesh panels along side and upper back for breathability
  • Front and back reflectivity for increased visibility in low-light settings
  • UPF 50+


  • Body (70% Polyester/30% S.Cafe Polyester), a synthetic fabric with moisture wicking and odor eliminating properties 


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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