Mansion House is putting the “fit” in benefit on Sunday, Dec. 15. The health club at Mansion House will be open from 6 a.m. to 9 p.m. for free swimming and workouts and they will donate a pass to Big Brothers/Big Sisters for every visitor they get.

The day gives the public an opportunity to check out the facilities and donate to the cause at the same time. Big Brothers/Big Sisters has been helping youth on the Vineyard for nearly 30 years.

For more information, call 508-693-2200.