Berkshire Partners of Boston has acquired full ownership of Masai Barefoot Technology, better known as MBT. The American investment company had acquired an initial minority stake in the Swiss-based producer of physiological footwear in 2007. The two other partners, Hermann Oberschneider and Klaus Heidegger, have cashed out. In connection with the change of ownership, Michel Perraudin, a former Adidas executive who has been on MBT's board since 2008, will become chairman of MBT, replacing Oberschneider, who is leaving the board along with Heidegger. Perraudin is also chairman of Odlo and a member of the board at several companies, including Tecnica Group (more in Shoe Intelligence).