I've gotta' tell ya'.... I'm not sure what the "wireless" refers to! Did the "earlier" version have wires in the bag?
But that would hurt, wouldn't it? I mean, you're using this 'cause you have a headache to begin with....
Maybe they were originally made with wire mesh?
And apparently, there were issues with misplacing the washers in the previous version.... is "Non-Losable" a word? (according to my friends at "spell-check".... it is not)
But no matter.... I'm just glad to have the "Genuine" ice bag. No knock-offs for me!
Hoping you all have a wonderful weekend...!