best training shoes ever but never pay over $40 for rubber shoes. considering they cost less than the typical $15.00 to make and transport regular type name brand shoes. price 2x cost is more than adequate moderated profit. no cushion so not for typical running/jumping.  i wore 1 pair for 2 years in south china tropical area and doing outdoor yoga, martial arts, and streetworkout nearly every day. unaccustomed feet will ache using them daily in a walking city like HK, also with great distance between soft earth and what you are actually walking on. 3 main issues with these; one problem is that they stink bad if you dont wear socks and they get wet from rain/puddles. socks i never wore so i would put baking soda  in them or wash them in the sink when needed ; then they dry pretty quick in the sun. the second pair had no smell issue after using 5-toe socks as something for the smell biodiversity to stick to. they also will wear out first on the toe ends since that is where fabric top and rubber bottom meet. it is not completely rubber covered on toe ends like vibrams so you should take notice of toe ends when doing exercise where toe ends hit ground. mine started to separate fabric from rubber near 1 year but i used black rubber adhesive to repair/ reinforce the toes multiple times. aside from that, the hard rubber soles will eventually wear out, prob around the ball/big toe joint. obviously your feet, legs, and maybe rest of body will ache a bit until your body is adjusted to actually using your feet more naturally. they have little cushion with a pretty stiff sole. these will help harden and strengthen your feet for sure, good for kicking bad people or vicious stray dogs. also beware the bottom has vent hole patterns that will allow water to enter from even the shallowest puddle.