O'Neill Thermo Long Sleeve Crew Rash Guard


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Spring temps call for the lightweight insulation of the O'Neill Thermo Long Sleeve Crew Rash Guard. Made from 8 oz P2 Polypropylene, this long sleeve surf shirt gives you just enough warmth to keep you comfy while the low bulk fabric and construction don't hinder your paddling at all. This O'Neill rash guard has 4-way stretch, seamless paddle zones under the arms and UPF 50 sun protection to shield your back from UV rays. Back on land, the water-repellant, odor resistant properties help it dry fast and keep it fresh when you leave the O'Neill Thermo L/S Crew shirt in your car all 8 hours while you put in some time with the man.


  • Fabric: 8 oz P2 Polypropylene provides excellent insulation in a minimal bulk fabric
  • UPF 50+
  • Seamless paddle zones
  • Super low crew neck: no interference with wetsuit neck
  • Water repellency
  • Dries fast
  • Odor resistance
  • 4-way stretch
  • Boardshort connector
  • Rash protection
  • Flatlock stitched (breathable seams)

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Review Summary

4 out of 4

1 Reviews

  • Build quality: 1
  • Performance: 1

Performance: 4 / 5
Quality: 4 / 5

1 Ratings & Reviews

Performance: 4 / 5
Quality: 4 / 5
from San Francisco, Ca
45-54 yrs

Great for Cold Wimps
April 04, 2013

For those who are cold swimming in a heating outdoor pool, the Thermo shirt really works well. It has additional thickness than the normal rash guard and not only gives sun protection, but has an extra layer to keep you warm on cold days. I'll only purchase Thermo's from now on as I never know when the pool's heater may break down!

Pros: Build quality, Performance

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O'Neill Thermo Long Sleeve Crew Rash Guard Photo

Black/ Black/ Black.

Available sizes, while supplies last, include size xs, size small, size medium, size large, size extra large and size extra extra large: xs, s, m, l, xl, xxl.

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