After reading reviews on Amazon, I ordered two of these. As I run most days, I was horrified to be given a delivery date a month away, but as they were such a very good buy (with 20% discount) I bit the bullet. And I am so glad I did. They arrived in much less time than that. And I don't know how they can be so supportive without either underwiring or squashing the old bosom into one lump on the front. But they do and I can see why one reviewer wears them all the time - I am tempted to do the same. As suggested elsewhere I sized up which is, I think, essential. I feel like a Victorian lady with her maid tightening her corsets as The Husband kindly hooks me in! (Three sets to align, which is slightly awkward). But I would recommend anyone - well,any woman - to try these for high impact activities. A first class product.