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Model Number:

The Pearl Izumi Infinity Tight delivers high-performance, run after run. Featuring a mid-weight slighty brushed fabric and significant stretch, this tight allows for strategic thermal regulation and great movement. An internal brief adds extra support and protection.


  • Black (021)


  • Approx. 28" inseam, 35" outseam (size medium, unstretched)
  • 3" x 5" secure-zip back pocket
  • Brushed interior for warmth
  • Flatlocked seams to eliminate chafing
  • 8" ankle zipper with garage
  • Internal built in brief for added support
  • Reflective detail for nighttime visibility
  • Plush elastic waistband features a drawcord


  • ELITE Thermal Lite: (65% Nylon/21%Polyester/14% Elastane), a high stretch, supportive fabric with light thermal 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

Customer Reviews

Comments: Recenly purchase the Pearl Izumi Infinity Tights. I'm 5'10" and about 175lbs medium frame. I have a 32" waist. These tights fit perfect. The tights are thin but warm. I wore them on a run in the rain and the temp was in the low 40's and stayed perfectly warm. I would think these would be okay down into the 30's to the upper 40's. They are not windproof so in cold wind you will start to feel it. They are not listed as thermal but they are. Not as much as the other PI tights. They are brushed on the inside which is very comfortable. It held out the light rain with no problem The ankles are not too tight which is okay but I would prefer them a little tighter. The brief they describe is more like an extra piece of material in the front. It is not like having a underwear fit inside. Though it is great that they put it there to keep the chill off the junk. The compression is light so it does not squeeze you but it's enough that nothing is lose. I have other running clothes and I always return to PI. The quality is outstanding and is very thought out and technical. I will use these tights for the majority of my cool or cold runs and use a thermal for the windy or really cold runs.
From: Ron W., Highspire, PA, USA

Comments: Purchased the Infinity tights primarily for cycling, but gave them a test on a four mile morning run. Temps in upper 30's plus wind chill; tights were fantastic; didnt feel the cold air at all. Really pleased with the weight of this tight. They are lycra but have a very thin fleece backing which provides the warmth w/o any added weight. Reflective taping is a nice touch esp.on those early am rides. Overall I would certainly recommend these tights runners and cyclists looking for that great Pearl Izumi fit and quality.
From: Ron, New Jersey