These are really nice and just slightly bigger in diameter than traditional plastic straws. They look great in my tumbler and I love that they are eco friendly. I also really like that they are stainless steel- not only do they just kind of make drinks seem more “refreshing,” I also know that they’re BPA free. They come with a cleaning brush and are dishwasher safe, which makes them really convenient to use. I have straight stainless steel straws as well, but these ones are easier for my kids. Both great though.