Mass Motion & Jump On It
Address: Both at 100 Holton St., Allston
Status: Opened in July 2011; opened in Sept. 2012
Mass Motion is a dance studio with classes for children and adults. Lowell-based company Jump On In opened a children’s party center at the same address in September 2012. The facility, which houses more than 11,000 square feet of slides, obstacle courses, table games and bouncing equipment, is the seven-year-old company’s fourth location in Massachusetts and the ninth overall.