We purchased a variety of Teva sandal models for a 15 day trip down the Grand Canyon.  We wore them around the house and yard for a few weeks to break them in.  The very first day in the canyon they started falling apart - the soles delaminated and I spent hours of precious canyon time trying to glue them using shoo goo, aqua seal and gorilla glue.  Nothing held more than a couple days. Finally we duct taped them as best we could and hoped we didn't kill ourselves on the hikes by slipping on the duct taped soles.  Another customer on the trip also had her Tevas delaminate (we had the spider rubber inserts, she had a full rubber sole).  The guides previously had bad experiences with Teva and wouldn't touch them with a 10 foot pole.

Teva knew these sandals were crap, and sold them anyway instead of recalling them.  I bought some of the original Teva sandals 20 years ago, but will never buy their product again.