These underwear are awesome! I haven't yet tried them on, but the modal material is soft and smooth.  The cut is sexy.  The colors are vibrant.  I ordered an XL because I thought they were maybe Asian sizing (usually a real disappointment), but I think it's US sizing and I don't think Modal (rayon fabric) shrinks.  I probably needed size large, but I'm going to make these work and reorder more in size large (despite being a Prime member, I'm not sure what the return policy is on unworn underwear).  If you like and are accustomed to bikini underwear, I think you'll like these underwear. Also, another reason I like them is because of the narrow waistband.  I'm 5'7" with a muscular, medium build. So, wider waistband underwear (swimwear) tend to give me a heavier/stockier look that emphasizes my shorter height while narrow waistbands give the illusion of length by showing more skin up to the waistline.  If you didn't know that secret, now you do!

UPDATE 5/21/18: I was able to return the XLs free of charge with Prime, and I reordered in size L, which is a perfect fit.  I used the Amazon Locker for the first time in returning the product and the credit back to me was fast! My reorder arrived fast as well. I think I'm going to use the Locker to receive packages as well. Seems pretty secure. 5 stars to Amazon too!