This was my second pair of toesox. The first pair was the purple stripe, I had to send back the first pair of purple stripes becuase the threading was unraveling around the toes. The same happend on the replacement pair. The Green/blue stripe however, seemed to be better quality and finish. Not sure why as they are made by the same company. They grip really well and keep my feet warm. I'm in yoga training, so I wear them a lot and they seem to be holding up better than the purple stripe. I wash them on gentle wash and then line dry them, as I'm not sure how the grippies will hold up after numerous times in a dryer.