Castelli Insider Jersey review

A super lightweight jersey for the steamiest of indoor sessions that can also be used outdoors on hot days

Castelli insider jersey
Cycling Weekly Verdict

The Castelli Insider Jersey is highly breathable and, although intended for indoor training, can also function as an ultra-lightweight jersey for hot summer rides. If it weren't for the silicone gripper in the hem, which is disproportionately tight, this would otherwise be perfectly fitting jersey that performs well in its intended scenario.

Reasons to buy
  • +

    Super breathable

  • +

    Two rear pockets

  • +

    Doubles as a summer jersey

Reasons to avoid
  • -

    Disproportionately tight around the waist

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The Castelli Insider Jersey is the lightest jersey the Italian brand has ever made, and it certainly feels that way – there really is nothing to it. Designed for indoor training when modesty requires a top, it should also make a pretty handy hot-weather jersey come a summer heatwave.

Castelli Insider Jersey: construction

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