Other than the SL being 10 dollar more than the expert, according to the Specialized website the only differences are in the shell and the padding:
"Medium density super-light EVA padding for longer rides - Stiff carbon-reinforced shell for longevity and all-day riding efficiency" for the expert
""Medium" carbon-reinforced shell for all day racing and durability - "Medium" rated ultra-light padding for all day rides" for the SL
Does it mean the expert has stiffer shell and thicker padding? I'm not sure which one would be better.
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