Very sturdy, large size for bigger plants
I love this size, has a thicker opening for monster growing plants. I would recommend only leaving on for a few days, however, as I had some very vigorous growth while these were and and some of the stems split inside the clip. I was able to tape back together and all growing well again. Now I know, as soon as the shape sets after a couple of days, when the stems fills the opening, it's time to remove. I also have smaller ones from another company, but these are my go to!