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Chpt./// Base Layer 1.81 - Inner Space


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A light soft and stylish base layer. Imagined by David Millar, made by Castelli.




"This is a microfiber polyester made as light and soft as possible. Its hydrophilic outer layer wicks moisture off the skin to the jersey yet doesn’t absorb moisture along the way."


"We made it a perfect weight so that when paired with the 1.21 Jersey you end up with the combined weight of a normal looking jersey only with much better comfort and moisture management."


"Contrary to the subdued colours of outer layer we decided to make the baselayer a bit more colourful, much the way a gentleman may choose the inner lining of his suit to contrast with the outside, in tailoring this is called a reveal, a flash ofcolour occasionally glimpsed that shows there’s something more going on than at first perceived."


"The neck is a little rounder than normal, more like a vest than a t-shirt, this compensates for the higher necks of the 1.21 and 1.61."


"I chose a sleeveless cut as this and the 1.21 Jersey are designed to be used together, sleeves on an undershirt can often be more uncomfortable with a short sleeve jersey."  


"The coloured design is taken from parametric patterns created from the data (a combination of my heart rate, watts, speed, distance etc.) of one of my final races, stage 17 at the 2014 Vuelta Espana."      

Additional Information


Chpt./// Size Guide

Delivery & Returns

Delivery Information

United Kingdom:

  -  Express 24hr Tracked + Signed @ £7.00  (Delivered within 1-2 business days)

  -  First Class Delivery @ £5.00    (Delivered within 2-3 business days).

  -  Economy Delivery @ £3.50    (Delivered within 3-5 business days).

All Standard deliveries are made Monday - Saturday, Courier deliveries are Monday - Friday.

Overseas Orders:

European Tracked Orders @ £12.50   (Delivered within 3-7 business days)

All Non-European Tracked Orders @ £17.50  (Delivered within 3-7 business days)


Returns Information

If you change your mind about an off the shelf, non-customised item, we offer a very simple no quibble returns policy.

Please make sure;

  • You contact us within 14 days of receiving your order.

  • They are returned to us within 30 days of receiving your request to return.

  • They are returned to us in perfect condition.

  • The packaging must be intact as we would love to sell the item again

Full details can be found on our returns page


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