DH bought me home some on Saturday afternoon, as i was feeling truly dreadful. They were great felt much better straight away.
Now i have quite small wrists but have been finding them uncomfortably tight. I noticed my left hand was quite sore, near a vein. This morning it is actually quite painful so i've removed them. Have been wearing them pretty much non stop since Saturday afternoon.
I've got the Boots travel bands and I'm finding them quite tight as well - I end up with red marks where the little button has been. Presumably acupressure needs a certain amount of, well, pressure, for it to work though.
I think I'd rather have uncomfortable wrists than feel vomitous, and they do seem to help.