No instructions were provided giving weight bearing capacity or any other info. I totally recommend anyone to buy this, however, perhaps in a different color. Definitely dampens sound. Their phones are in easy view for GPS, music, or phone calls. Hermosas ?? ?? ?? ?? ?? I have purchased other stone types from this seller and honestly its a shot in the dark. Highly recommend these shoes if you are on your feet all the time at your job The covers went in perfectly, and the pads snapped in exactly. Its an amazing product. I selected these because of the price and made note of one of the other reviews explaining the cross bars can only be installed from the rear and to invert the pieces that go into the channel.