Our Ruff Stocks are meant for working ranch folks. Our genuine rubber 50K Outsole is heavy duty, with a rubber midsole for added comfort and support. The attached heel is just that – attached. If you happen to get hung up it will pull loose. Finally, just like all Twisted X, these collections have the XSD insole for fit and stability, while the SD footbed is super comfortable and also moisture wicking, antibacterial, and machine washable.