The comfort of the Twisted X Boots WDM0071 Driving Moc Chukka will have you convinced that you're kicking about in your most comfortable slippers! Patented Twisted X technology Removable moisture wicking, machine washable, and antimicrobial EVA footbed Patented one piece XSD insole with injected carbon fiber shank Supportive and cushioning PVC/EVA midsole 60K super slab slip-resistant rubber sole. California Prop 65 Warning: