A friend of ours told us a funny story about wearing a pair of one-size-fits-all thong underwear to work under a skirt. The underwear had never been a tight fit on her size 2 frame, and on one particular day she noticed that the underwear felt extra loose. The elastic had started to give out, and since the underwear had never been a great fit to begin with, she shuffled around her office all day hoping that her panties didn’t slide down to her ankles.

Most underwear is sized S/M/L. Have you ever held a small up next to a medium and a large? We have. Often, they are not that different in size. It just doesn’t make sense how those three sizes will fit everyone from a 2 to a 12 and fit them well.

We wanted RX Undies to be a great fit, no matter what size you are. That is why they range in size from 00-20 and correspond to pants/skits sizes. When your underwear fits your body well, it says put all day.

Do you need a size not represented in the RX Undies size range? Let us know; we love feedback and want to make sure we are providing RX Undies sized correspondingly to those interested in wearing them.