We have 5 taken from the Sioux style design. These come with natural wooden poles selected from managed UK woodlands. 
The skins are heavy duty 12oz Polycotton fabric that is the highest standard fabric for this purpose and is treated against rot, water and fire.
They come with rain hats for the times you don't want  a campfire burning inside and also liners to help draw the smoke upwards to the smoke flap. 
Optional extra is a heavy duty PVC groundsheet and coir matting (see accessories category).