I was so curious about this bra and I needed a new one so I figured I'd give it a try. The claim is that you get total nipple coverage with the least amount of padding.
The bra makes good on it's promise and on top of that is extremely comfortable. It feels like a lightly lined underwire, and the smooth fabric is like a tube all the way around the sides, back, and straps. So nothing but the microfiber is touching your skin.
I definitely recommend the IPEX, but the downfall is that the smallest it comes in is 34 B, so lots of svelte girls will be out of luck. . .
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Know first, who you are; and then adorn yourself accordingly.
-Epictetus