Have been window cleaning for about 18 years.
Noticed that squeegee wise, that there has been no real change how they are made.
Fixed squeegee make up most of the market.
And swivel type squeegees.
What we are talking about is the (handles)
They are thin, thick, big or small at one end of the handle small indentions on grip handle or rubber grip pads etc.
So the handle has economic grip??
Yes it has when you hold it vertically.
However when using squeegee you do not use it vertically but more like horizontally to the surfaced.
Believe this is what’s causing many people to getting RSI cramping in the hands, wrists, forearms, fingers and shoulders.
Maybe that manufactures do not want to change now because it might obsolete what products they sell now??
So it is very possible they (manufactures) may have solutions to this but choose to not make them because of the above.
So as said it is only theory.
In this day and age do you really think there is not other better alterative to what they are making now?
Do you believe that squeegee handles need to be designed to the way it griped /held.
If there any (manufactures) like to have bit of input on this you have the stage.