Castelli Endurance 4 Summer Bib Shorts 2026

Castelli Endurance 4 summer bib shorts for long bike rides, designed for comfort. They feature the X2 Air Seamless pad and are suitable for temperatures from 15 °C to 25+ °C.

• X2 Air Seamless pad, designed for comfort on long rides
• Mesh bib straps and back, Endurance Evolution fabric
• GIRO3 leg grippers to keep the shorts in place
• From 15 °C to 25+ °C, but neither waterproof nor windproof
• Choose from sizes S, M, L, XL, XXL and XXXL, in black

Technical features

• Colour: Black
• Sizes: S, M, L, XL, XXL, XXXL
• Material: Endurance Evolution fabric; mesh bib straps and back
• Pad: Progetto X2 Air Seamless
• Leg grippers: GIRO3 leg grippers
• Pockets: None
• Operating temperature: From 15 °C to 25+ °C
• Intended use: Long rides focused on comfort; not waterproof, not windproof

Castelli’s roots lie in Vittore Gianni’s tailoring shop, founded in Milan in 1876; Maurizio Castelli created the scorpion brand in 1974. Today it is based in Fonzaso and makes clothing for your rides, from jerseys to shorts. In 1977 it introduced aerodynamic Lycra shorts, used in racing and sold to the public.