My first pair of house slippers a few years ago, had real tread of them. Man, you could have gone hiking in these. They were from Lands End. Nice, warm shoe. Still have them but they have stretched out but are still able to wear them with socks. Then last year my youngest son got me a pair of Acorn's . They didn't come in 1/2 sizes, so he ordered me a 1/2 smaller, They have stretched out and just love them. Holding up very well and I wear them all the time.