All leather can shrink if it gets wet and dries.
Was OJ accused of wearing a saddle, seats, hat, or jacket on his his hands? I don't recall that part of the trial.
They DID talk specifically about the Aris glove that had OJ's DNA in it, along with Nicole and Ron's.
The expert witness said:
"Since I didn't personally try the gloves on at any point in time, I would estimate the shrinkage of approximately 15 percent."
"What happens when gloves get wet, the water or whatever it is that actually wets the glove absorbs small amounts of the fat liquor which creates shrinkage. Over time, as the gloves try naturally, the gloves actually can come back very close to its original shape, but they will never come back to the original size, because once a certain percentage of the fat liquor disappears, the glove loses a little of it's elasticity."
What made him more of an expert than you is that he had worked for Aris for 14 years as of 1990.
He was (his testimony) "responsible for the design, manufacturing, production, raw material, sales and marketing of all men's gloves."