Featuring the usual retinue of torsion and impact protection, these new Sidi Vertigo Corsa boots are identical to last year’s model in all but color. White boots are something of an anomaly. They look great when worn properly — clean, with all-black leathers — but terrible when dirty or worn with colors. If you think you can pull it off, you’ll be rewarded with a shock-absorbing heel; anti-crush sole; replaceable impact and abrasion protection on the shin; and limited articulation ankle protectors. Additionally, ventilation intake and exhaust ports are controlled through a single button.