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Lake's top-tier road shoe gets an update in the new CX403. Featuring the same custom fit carbon fiber sole and supple kangaroo leather upper as its predecessor, the CX403's closure system is redesigned and the added rubber toe bumper helps extend the shoe's longevity for all the training and racing ahead this season. Lake has worked long and hard on building the ultra-efficient Custom Fit carbon fiber sole. You may have had carbon-soled shoes in the past that didn't quite fit, and if that's the case, you recognize that ultimate power transfer is meaningless if your feet are in agony. But you can say goodbye to the era of compromise, as these are heat moldable, ensuring the perfect fit and incredible heel hold for maximum power transfer.