Kain is a t-shirt line born and made in Los Angeles. This line from Amanda Kain consists of perfectly updated versions of the classics, perfect silhouettes, and perfectly simple.
If your looking for really dressy sweat pants then maybe these are for you. They have almost no elastic or stretch to them and the fabric is shiney. You can't wear these with sneakers. You would have to wear them with dressy shoes. I sent mine back. Just not for me. The sizing is pretty accurate. I'm a size 27 waist and the size small was a perfect fit.
I can see why these pants are expensive. Nice details and fabric. The issue I had was that the fabric was too dressy for the style of pant. I also didn't like that they had no stretch to them and only a tie waist (no elastic). I returned them but if you are looking for a dressy lounge pant then these are perfect. With a pair of dressy flip flops these could be worn to a daytime date.