BOSTON--(BUSINESS WIRE)--Berkshire Partners LLC, a Boston-based investment firm, together with New Balance Holding, Inc., the investment arm of New Balance, today announced that they have completed the acquisition of The Rockport Company from the adidas Group. The Rockport Company is a leading designer and marketer of high-quality comfort footwear for men and women. As part of the transaction, Drydock Footwear LLC, currently a New Balance affiliate and home to the Cobb Hill, Aravon and Dunham b