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Pearl Izumi IsoTransition

Item Number: 16111005-3OG

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  • Type: Racing
  • Manufacturer's Category: Triathlon Race / Train
  • Pronation Control: Neutral
  • Weight: 7.5 oz
  • Height: 19/10 mm (Heel/Toe)
  • Drop: 9 mm
  • Features: 1:1 Seamless Upper / 1:1 360° Lacing / 1:1 Energy Foam


  • Designed and developed with 2x IronMan World Champion Tim DeBoom, the new IsoTransition was built to perform when it counts—on race day. The quick-pull lacing system and self-draining midsole are designed to help you shave valuable minutes for your next PR. The breathable, Seamless Upper provides such amazing, out-of-the-box barefoot comfort, you'll swear that someone is tickling your little piggies.


    • 1:1 Seamless Upper creates an unparalleled fit with a seam-free interior
    • 1:1 360° Lacing anatomically conforms to the foot for a tailored fit regardless of foot shape
    • Quick lacing system for easy entry and fast transition times
    • NEW 1:1 Energy Foam cushions the forefoot upon impact and then returns energy back to the runner
    • Blown Rubber & high durability EVA outsole combine for great cushioning and weight savings
    • Drainage holes in midsole allow water and sweat to escape
    • NEW quick draining Ortholite sockliner for amazing step-in comfort and long-lasting cushioning

Reviews: Pearl Izumi IsoTransition

5 out of 5

Reviewed by 4 customers

Have an opinion on this product? Share your thoughts.

  • Great tri shoe

    Customer Rating
  • Date: 6/18/2012
    Reviewer: | Chicago
  • 5 out of 5 Love Pearl Izumi stuff in general hence why i bought these. First run felt good. These just feel light, fast, and comfortable even without socks. I will say that they feel 1/2 size small i.e I could not wear socks if that was my intent. I wear a 12 1/2 or 13 these I probably need a 13 1/2 Not really a problem and they are great but I will probably wind up buying a pair 1/2 size larger in the future.

  • Pearl iZUMi Iso Transition Running shoe

    Customer Rating
  • Date: 6/14/2012
    Reviewer: | n/a
  • 5 out of 5 Love the shoe, feels great and super light. I have been running in them for about 200 miles already within a month..

  • The best tri shoe I have ever had

    Customer Rating
  • Date: 6/8/2012
    Reviewer: | n/a
  • 5 out of 5 This shoe is amazing, very easy to wear after biking, even with your feet wet. Very light and soft. Highly recommended.

  • tri shoe review

    Customer Rating
  • Date: 6/3/2012
    Reviewer: | miami
  • 5 out of 5 These shoes are light weight and fast! They feel great without socks, no sore spots or rubbing whatsoever. The first day that I ran in them they felt better than my regular running shoes. I normally run in brooks running shoes and I do not like running on the side walk with them because I can feel more impact with the brooks. The pearls felt great on the concrete and the asphalt. They pull on fast and seem to be a neutral shoe. My only word of caution is that they are fairly aggressive! If you are used to running in shoes with a thick sole this might not be a good fit.

Pearl Izumi IsoTransition White / Safety Orange

About Pearl Izumi IsoTransition

  • Ready to rock on race day? The Pearl Izumi isoTransition lets you shift right into high gear when you really need it. This running shoe was dreamt up by Tim DeBoom, the two-time IronMan World Champion. With a breathable seamless upper, the isoTransition has excellent out-of-the-box comfort, and its seam-free interior keeps hotspots at bay. Its quick-pull lacing system makes it easy to pull on and go. The drainage system in the midsole doesn’t let anything weigh you down, and sweat and water can easily escape. With a weight of 7.5 ounces, the isoTransition is one of the lightest shoes in the Pearl Izumi collection.

About Pearl Izumi

Pearl Izumi collage Pearl Izumi designs shoes for a rare breed of individuals called runners. Are runners an endangered species? Whether its track or trail runners, Pearl Izumi believes so. That's why its shoes aren't just made to look good but to go fast. The Japanese-based company all started when a father set out to provide his son the best gear for bicycle racing. The brand made its way stateside in the early 80s providing sponsorship dollars to bike teams. Nowadays, Pearl Izumi builds products for many high-endurance sports including cross-country skiing, triathlon, running, and, of course, cycling.
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Shoe Care & Maintenance
Clean mud off with a damp sponge and then stuff the inside of the shoes with paper to help absorb moisture and maintain shape. Never clean shoes in a washing machine. Keep the outsole clean by scrubbing with a soft brush when needed.

Air dry at room temperature. Do not dry the shoes by a fire, radiator or other heat source. Do not leave them in your car on a hot day. Extreme, direct heat can cause the materials to dry out or crack. This will damage your shoes and void your warranty.