I bought this and it's too easy to pop-off the Pebble Time. I've had it pop-off several times already just barely snagging on my laptop bag and other things. The plastic is too flexible and thin. It needs a better way to secure it to the watch and the little flaps that hook behind the watch are way too small. The bezel itself could also be thicker as crystal isn't inset much, especially looking at the diagonal due to the curved screen. Having a higher bezel would prevent friction type damage to bezel from rubbing against a wall while wearing.
Material-wise it is good quality with no marring to the front or back surfaces. Production and shipping was good, needed only one week between ordering and receiving.