Blue Seventy Adjustable Thermal Skull Cap - 2024

Blue Seventy
(1 review)
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Add an extra layer of warmth! The ultimate tool for keeping warmer during your open water swims, the Thermal Skull cap features high quality Yamamoto neoprene paired with Blue Seventy's unique thermal liner found in their Thermal Reaction wetsuits.

By incorporating their Zirconium internal jersey they have reduced water absorption which helps create an extra boundary layer to protect against heat loss, in addition the cap is softer and more comfortable. 

They've updated this popular product to make the chin strap adjustable with a velcro closure.  Simply adjust the strap to where it feels comfortable but secure and trim off any excess strap with sharp scissors.

  • 3mm Yamamoto neoprene 
  • Flexible central panel enhances fit
  • Zirconium liner provides extra layer to protect against heat loss


  • 5
    Very nice. Size L fits

    Posted by ERIC MOE on 28th Mar 2021

    Size large fits my normally impossible to fit fat head. Super warm in 51d f. Keeps my ears warm