The founders of Crocs shoes may not have a designed something that even comes close to being aesthetically pleasing (In fact, the Croc was developed as a “spa shoe.”), but have become wildly successful in spite of that. The company announced yesterday that full-year revenue will surpass the $1 billion mark for the first time. Yes, Crocs are increasing in popularity.

The shoes that make many of us cringe on-sight have withstood a lot–constant ridicule, a hate website and a few dips in stock, including a pretty big one in 2007. But the company seems to have have put all of that behind them and are somehow inspiring people to run to the mall and buy their odd-looking hole-filled slip-ons. In addition to, and largely because of, this revenue milestone; the firm’s shares went up 6.3 percent, Footwear News reports. So, whether or not you’d be caught dead wearing a pair of Crocs, you’d probably be wise to invest in them. If they’ve survived this long, they’re probably more than just a fad.

But why? They have expanded into different shoe categories like boots, boat shoes and ballet flats. And their popularity among children is understandable, but why adults choose to parade around in them–even matching them to their crazy hot pink gowns a la Brooke Shields–is a mystery we’ll never be able to solve. Oh well. Congrats, Crocs!