This lovely formal vest and tie set is from a rental line at Bunny Tuxedos. Due to damages in key sizes and colors, this line was discontinued prematurely and what is on eBay is in Excellent pre worn condition.

This is not a full back vest but just the front half with adjustable straps around the neck and back.  This makes the vest more comfortable, less hot, and easier to size/adjust.

Men's one size fits most with adjustable strap around neck and back, plus boys sizes and Big & Tall.

Men's "Fit All" adjusts to comfortably fit waist sizes from 28 to 48.