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Simpson Race Products Adrenalin is a stylish shoe with a great sole for better grip on pedals and floor pan. Satin suede toe, heel and lace guard reinforcements. Triple layer anterior toe area for added wear protection. Low cut Achilles support for maximum flexibility. The most comfortable driving shoe we know of on the market. Wide toe box feels like a regular shoe. Fleece Nomex lining. Also available in Kids 1-3.