The material 90% polyamide, 10% elastane is remarkably soft, light and very comfortable to the touch.
The seams are in front and, very flat processed on the sides and not disturb. This is no back seam.
Front pants is doubled inside with soft cotton-spandex blend.
The federal government is sewn separately and has a firmly sewn, wide elastic band drawn. By stitching the rubber in the waistband can not twist.
Conclusion:
Very soft and comfortable material, by 10% spandex it fits perfectly.