Castelli Flanders Warm Long Sleeve (Black) (S)

Castelli Flanders Warm Long Sleeve (Black) (S)
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Castelli Flanders Warm Long-Sleeve Base Layer Description:

The Castelli Flanders warm long-sleeve base layer is designed for the coolest months. High-loft fleece inside provides warmth and excellent moisture management along with a soft feel. Multiweight polyester fabrics come together for a stretchy fit and finish with flat-lock seams for an extra touch of quality. The Castelli Flanders base layer is warm, dry, and comfortable, making it perfect for cold days on the bike.


  • Flat-lock stitching
  • Mesh underarm insert
  • SottoZero fleece (100% polyester fabric)
  • Temperature range: 10°C (-2°F) - 28°C (50°F)


  • Gender: Universal
  • Fabric: SottoZero Fleece
  • Sleeve Length: Long Sleeve
  • Color: Black

This product was added to our catalog on July 24, 2023

Castelli Sizing: Many Castelli products are designed with a European race-fit. It is not uncommon to size up one size for a standard, race fit or two sizes for a more relaxed fit.

Measurement Guide:

  1. Chest: Measure the circumference around the fullest part of chest, under arms
  2. Waist: Measure circumference around natural waistline keeping the tape a bit loose

Circumference (in)
Circumference (in)

Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired. Castelli instructs that for best results measurements be taken over underwear. Castelli recommends sizing up if measurements fall between sizes for a better fit.