Do you have any experience with this tubes?

Nod

At those prices I RECKON I WONT BUY THEM!. I can buy a bunch of tubes for that price! I also,feel that the tube flats I get now will puncture that as well. Other issues are ease and time of tube repair. I will pass, you might too!

EDIT

The weight savings is meaningful only for a pro rider. If you are into saving weight, the weight to $ ratio is not that bad. I recently had a chance to go for a training ride with a pro rider. He road a bike with wheels and tires just like mine.... Clinchers. If you have the money, and you want to find out for yourself buy a set. Let me know how you faire with them. Email me with your results. I would be interested to know! But for my money, at this time, I would rather spend as little as possible On an expendable product.

Soccerref

Its far too pricey unless your into major racing circuit it's not worth it but it does look pretty cool . I would just get a good puncture resistance tube if you do everyday street riding .