http://www.runnersworld.se/blogs/prylbloggen/x-bionic-energy-accumulator_190.htm Victor Emilson (Editor Runner´s World Sweden) said: "The Rolls Royce of underwear - X-Bionic Quality into the smallest details, even the packaging reflects quality. All the functions are top and the warranty for 2 years means that X-Bionic has a safe organization behind that backs up the products. According to the price, SEK 2000, it should be good and you will not be disappointed. We should not talk more money but when you want a top of the line product it costs. They have been thinking of everything into the smallest detail which could make the product better. For you, who wants the best regardsless of price, choose X-BIONIC."