So I've been wearing knix for years and used to really love their products, but unfortunately the quality has decreased and I will no longer be purchasing their products. They do feel tight at first which loosens with wear, but the real issue I have with knix underwear is that after 6 months or so the seams have come off - and not just on a few pairs, but on ALL of my knix underwear. It appears the seam is glued on and once it's off they tend to roll, making them no longer seamless (unless you are always checking them & adjusting). They are cheaply made in china and bunch up the crack after they loosen. For the price point I would expect a higher quality product. Also, they are not 100% or even 90% cotton. Wearing good quality cotton has more breathability and is much better for keeping your lady bits balanced and healthy.