And he did it with a leak in his pressure suit!
His hand swelled to double its normal size.
He looked like HDS when he was recovered on the ground.
(Hammered Dog S***)
If you can find it, the best account of the balloon experiments of the 50s is Kittinger’s Book, “The Long, Lonely Leap”.
I still find it now and then on eBay, I have 2 copies in my library.