I saw that the fit guide was different for these so I sized up and boy am I glad I did. I'm 165cm, 56kg, waist 70cm, hips 95cm, usually a size small but I got a medium in these. They are suuuper tight and compressive, especially in the thighs, and took a couple days of wear to "break in". I also got the Infinite Compression Sculpt leggings in small and those fit perfectly.
These are a quite thick fabric with almost like a knit texture exterior and a super soft interior.
The fit kinda reminds me of my Gymshark Vital Seamless, except these are thicker and way softer inside. Other than running small, my one gripe is that they give me "unibutt" which I didn't believe was a thing until I bought these leggings. These really should have a rear seam or butt-scrunch detail, but then they might infringe upon the Gymshark Adapt Animal Seamless territory? Either way, I hope that Kyodan keeps tweaking their designs because I love their unique fabrics and the quality of the garments