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Blue Seventy Adjustable Thermal Skull Cap


Our Take 

Thermal swim caps are a game changer when you want to start your open water swimming early or extend it into fall.  FR staff member Stefan will start the open water season in the ocean wearing thermal cap, gloves and booties.  The gloves will be the first to come off, then the booties and then the cap as it affects the swim stroke the least and has the greatest effect combating heat loss.


  • Zirconium internal jersey reduces water absorption which helps create an extra boundary layer to protect against heat loss.
  • Adjustable chin strap for more comfort.