I have a pair of cheap copies that the wife bought out of Asda. Perfect for kayaking snowboarding and hiking for when you come off the water/snow/hill easy to slip on in when you are cold wet and they let the feet breathe and relax after being in tight wet suit boots, snow boarding boots or walking boots. weigh bugger all and really easy to clean. Ok they look like poo and are about as popular as a hedgehog in a condom factory. But I aint going to care as they serve a purpose and do it very well.