Disappointed boot failed - Danner 453 GTX 5.5in Hiking Shoes - Men's

I have a pair of Danner 453 for some time, dont really recall exactly when I got them. I really liked them a lot for comfort and fit. I have not worn them a lot, all the writing on the inside of the tongues is still fully legible but this weekend I put them on and the rubber area that wraps around the heel cracked and separated from the leather on both boots, completely destroying the boots. For reference imaging pulling on the boots by grabbing the back edge above the heel and the entire leather area separating from the rubber insert at the back of the heel. These are marked made in China by the way.