XL
    L
    XS
    M
    S
    XXL
    ← All articles
    Niche verticals Apr 17, 2027 5 min read

    Size Guide for Cycling Kit Brands

    Cycling kit brands need race fit + club fit options. Castelli, Rapha, Pearl Izumi all run differently. Brand-by-brand guidance + return reduction tactics.

    The Chart

    ProductRace FitClub Fit
    JerseyTight aeroRelaxed for casual
    Bib shortsCompressionComfort cushion + relaxed
    JacketSlim layeredRoomy for layers
    VestAero giletLooser windbreaker

    FAQs

    Brand calibration matters?

    Hugely. Castelli runs small + Italian. Rapha runs slightly large + UK. Pearl Izumi true to US. Show fit comparison vs your customer's known brand.

    Bib shorts difficult to size?

    Yes — three measurements (waist + hip + height) plus chamois positioning. Most cyclists size up if between sizes (chamois compression preserved).

    Need this on your store?

    Tailor Size Guide ships pre-built size charts for Shopify.