These are absolutely awesome reusable stainless steel drinking straws. I use plastic cups and straws all the time! So glad I have these now to keep me eco friendly. I know i throw away dozens of straws a day just because i don have reusable ones. I am so glad to have these now to also fit in to my big on the go cups! I am very happy with these and would definitely purchase again. I would also recommend these to others. I received this product for free in exchange for my complete and honest review.