Still in its early phases, the 1,500-square-foot space, designed by William Sofield, will have the largest selection of Atwood’s designer and contemporary collections, with more than 50 handbag styles. Atwood said the store will be driven by the designer line — which will occupy two of the four main areas, including 25 to 30 exclusive styles that will be available only at that location. B Brian Atwood and handbags will each have their own sections as well.