Atoms.com is a legitimate website. The company, Atoms, is known for its comfortable and stylish sneakers. Founded by Waqas Ali and Sidra Qasim, Atoms has gained popularity for its minimalist designs and customizable sizes. The brand has been featured in Forbes, Esquire, Vogue, British GQ, TechCrunch, and Bloomberg. Customers appreciate the quarter-sizing option, which allows for a better fit. However, some reviews mention that the shoes may wear down quicker than expected. Overall, Atoms.com is a reputable site for purchasing sneakers.