Order by December 15th to guarantee delivery before Christmas
Extended Christmas return until the end of January
CUSTOMIZE- Weight:33 g
Thermoflex is warm, soft and stretchy
Flat-lock stitching
Contoured to cover ears
Raw-cut edge lies flat and doesn't bunch under helmet
Reflective detailing on back
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Here is what our customers think about it
1 reviews
Superb, thin, surprising effective
08/11/2023
Another piece of surprisingly effective kit from Castelli. It is super thin and fits under a race helmet without much adjustment. Nice soft comfortable material and warm for me down to 4/5 degrees and not too warm up to 14/15 degrees for me. My son uses one down to zero degrees and is immensely happy with it even down to such low temperatures. For me when it gets that cold I use the Estremo skully but anything above 4/5 degrees and this is my go to under helmet hat.
Superb, thin, surprising effective
08/11/2023
Another piece of surprisingly effective kit from Castelli. It is super thin and fits under a race helmet without much adjustment. Nice soft comfortable material and warm for me down to 4/5 degrees and not too warm up to 14/15 degrees for me. My son uses one down to zero degrees and is immensely happy with it even down to such low temperatures. For me when it gets that cold I use the Estremo skully but anything above 4/5 degrees and this is my go to under helmet hat.
