I have been intrigued about seamless underwear for a while for my workouts and decided to bite the billet and a pair to see how they are.  They are very comfortable, lovely thick waist band that is nicely fitted.  I think definitely go for the size up, I did fine them a little neat around the groin area, however this may just be a personal preference. Overall a good purchase and I will be getting a pack of them ASAP! 

Order these in black also I am usually a small but glad I ordered the medium 

I was on the lookout for a seamfree thong for wearing under my gym leggings, I've tried so many and they are either too low rise, irritable fabric, or just don't fit right. So glad I went for these, they are absolutely perfect. So comfy, can be worn all day, and invisible under tight clothing. Have since bought other colours and matching bras. Highly recommend!