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Code: CS14531008
Castelli Flanders Warm LS (Long Sleeve) Base Layer - AW18

The Castelli Flanders Warm LS Base Layer was made for the conditions of Flanders in February, or basically any month between September and May. The High Loft fleece inner provides extra warmth with a noticeably soft feel on your skin. This 100% multi-denier fabric gives you excellent moisture management and features built in stretch to give a perfect fit. Castelli have finished off this long sleeved base layer with flat-lock seams for an extra touch of quality.


  • Sotto Zero Fleece multi-denier 100% polyester fabric
  • Flat-lock stitching
  • Mesh armpit insert
  • Flat hem tucks away in tights
Having bought the version with the neck warmer, I had no hesitation in buying this. It fits well under my Castelli Large size jackets. If you want to stay warm during cold weather, don't hesitate to buy this product.
I've been won over to Castelli over the last year. The sizing is silly but it is consistent so now I know I'm XXL(!) it's ok. Everything Castelli I've bought has been top notch and this is no exception. There's some thought gone into the design. It's warm and it's comfortable.
Very comfortable next to the skin. It could have blocked the wind a little better but that is not what it is for. It added a good thermal layer. I have not used this below 42 degrees, so it is too early to truly state how warm it is yet.