Our troop is considering a new source and maybe a new design for neckerchiefs, so I checked out the price for official BSA neckerchiefs and got a big surprise. The BSA has made them a lot bigger. They say:
Design reverts back to the standard larger size offering a variety of uses, as a sling, signal, bandage, belt, patrol ID, and more. Standard size is now 49.5 inch X 35 inch X 35 inch.
The previous size wasn’t documented anywhere I could find, but I measured mine as 41 X 29 X 29 for my post with a table of sizes for different Scout neckerchiefs. I’ve updated that table with the 2011 BSA neckerchief.