Designed for elite performance.

The Castle Triathlon Series Base Layer is designed for ergonomic performance and unrivalled comfort.

Built for a tight yet comfortable fit, the Castle Triathlon Series Base Layer is ideal for competition, preparation and participation in the event. 

Please refer to the 'Size Chart' tab before purchasing to ensure the shirt is as expected. If you're still unsure, click on 'Contact' or message us through our social channels.

Key Features:

  • Stunning black, white and orange design with sublimated detail.
  • Flat-seam technology moves smoothly against your skin.
  • Breathable material used throughout help keep you cool.
  • Stretchy, manoeuvrable fabric offers a great degree of motion and freedom. 
  • Castle Triathlon-exclusive designs and colours.


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Castle Tri Series - Base Layer (Mens)

  • Product Code: CTSBLAYERM
  • Availability: In Stock
  • £25.00

  • Ex Tax: £20.83

Available Options