What is the difference between Castelli Prologo 15 and Prologo 13 socks?

The number denotes cuff height in centimetres — Prologo 15 has a 15cm cuff (mid-calf) and Prologo 13 has a 13cm cuff (slightly shorter). 15cm is the current standard for road racing aesthetics; 13cm is slightly more casual.

Are Castelli socks worth the price premium over budget cycling socks?

Yes, for regular cyclists — the Italian-knit construction provides a noticeably more precise fit, better compression retention over time, and superior durability compared to budget alternatives. For cyclists who ride 3+ times per week, the price per kilometre advantage is real.

Castelli

Castelli Prologo 15 Socks - Light Steel Blue/Pop Orange

Name: Castelli Prologo 15 Socks - Light Steel Blue/Pop Orange
Brand: Castelli
SKU: 4521028-062
Price: 1189.00 INR
Availability: InStock
Author: InstaSport Editorial

₹1189.00

Description

The Prologo 15 Cycling Socks are the classic Castelli sock, using highly functional yarns and a smooth snug fit to deliver sublime comfort when you're enjoying pedalling. The key to the comfort and snug fit of the Prologo 15 Cycling Socks is the combination of 200-needle construction and Meryl® Skin