All belly bands are 6" wide surgical elastic.
Worm around mid-section, can easily be concealed under sweats, sweaters and shirts. Superimposed 4" holsters can carry almost any weapon and 4" wide clip holder for 2 clips. Heavy duty velcro closure.
Sizes
SM -30-34
Med -34-38
Lg -38-42
XLg -42-46
It is comfortable, and I've stuck a Kahr MK40, a 1911 Gov't model, and a Glock 17 into it with success so far.