UK size guide
Castelli Shorts Size Guide
Fit notes, product-level sizing signals, and review-backed guidance for buying Castelli shorts online.
Community fit data is growing. Based on brand sizing information and product specifications.
Short answer
Castelli shorts: what we know so far.
Italian cycling clothing with technical chamois construction. Runs small — size up at least one, sometimes two. KISS Air2 chamois is well-regarded for longer rides. UPF sun protection in bib shorts.
Watch out: Sizing is notoriously difficult. No utility outside cycling. Not suitable for pear or plus shapes without significant sizing up.
Products in this guide
