We found the factory in China that makes most of the Silk Knit underwear that comes to the USA. This is the soft, slinky stuff you wear next to your skin for warmth or layering. Silk knit can be made in lots of thicknesses. we first chose the 75 grams per sq. meter. You said you wanted it heavier so now we switched to 100 gms/m. We are having them sewn for us with Silk Thread so you can dye or decorate them in any color you like with out the stitching being a problem. Our first shipment seemed a bit on the small side even considering that it stretches, so we had them increase the measurements where needed. This even comes with a fly!