What Is the Castelli Endurance 4 Bibshort?
The Castelli Endurance 4 Bibshort is built around Castelli's top-of-the-line Progetto X2 Air Seamless seat pad, which Castelli calls its most comfortable seat pad. The pad has a seamless, bacteriostatic skin care layer that adapts to the shape of your body and saddle without folds, and a cushioni
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Nice bibs - love the chammois!
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Scott · July 7, 2026
Great bib. Will buy another one asap.Very comfortable ride. Must have for long rides