M-F Athletic/Perform Better, Cranston, RI, offers Superbands, a thick, extra-strong band for heavy-duty uses.

The bands are suitable for assisted chin-ups and dips; they provide resistance for walks, shuffles, and lunges; and during weightlifting, the bands can be used to overload the body and add leverage to lifts.

They measure 40 inches long by 3/16-inch thick, and are available in four widths, ranging from ½-inch to 2½ inches wide.

Superbands can be ordered from the 2010 Perform Better catalog, via the Perform Better Web site, or by calling (800) 556-7464.

[Source: M-F Athletic/Perform Better]