Bought these to replace a few damaged “permanent” straws, used for my various acrylic tumblers. They are fine in the dishwasher, but I don’t use a heated dry. Comes with a pipe cleaner, (which I found more useful for my canna pipe), but it’s meant for the straws. Nice flat box, fits well in kitchen drawer. Vibrant colors. They have the little nubs, to keep the straws from falling from the lids.