I have several u1026 thongs from iSwim and like to share my thoughts on these thongs.
https://iswim.com.tw/goods.php?id=2119&lang=en
I ordered this thong in wet-look black, because I like black for swimwear. I like the somewhat shiny look of the wet-look fabric too, which is rather thin but just not see through when wet. The wet-look fabric is rather stretchy and the pouch fits naturally around your package. I'm average in size and the pouch is just right for me. This suit is sold as underwear but when ordering it in wet-look fabric nobody will notice the difference with swimwear. The wet-look fabric is thinner and lighter then the swimwear fabric most suppliers use. Therefore the fabric dries very quickly, which is fine. When ordering from an Asian company like iSwim you have to order minimum one size up. I'm between S and M (31" waist), but at iSwim I always order size L. L fits rather snug, those who like a more loose fit should order XL.
The u1026 is very comfortable; the side straps are 15mm wide. The suits stays in place very well and you hardly feel you are wearing a thong. The standard back-rise is 'super low' as iSwim calls it. The standard height is -Y1, but if you order -Y0 the back is about 1 inch higher. Since I do like the butt-crack covered the Y0 back is the right choice for me.
The stitching is very well done. Shipping to Europe takes 2-3 weeks. Shipping charges are reasonable (about $ 6,50).
Hope my review is useful.
Navythong