They are not slippery the bottoms are protected so you dont slide around. The only thing I wish it did better was to have a nicer cradle for charging. UPDATE 6 months laterSole separated from shoe. Customer service is very quick to respond to emails and questions. Quite vibrant and beautiful in person Total Croc guy! I did not have the ability, skill, patience or the time to do that. I, like many others, rely on reviews when ordering anything. There was also a bit of experimentation with the different tips and fins needed to achieve my desired ear fit and optimum sound (especially the heavier bass response that I love! They soften and break in over a bit of time.