This cute thong is from Forever 21. It is a size XL.
The material is 90% Nylon / 10% Spandex.
The body is sheer floral lace.
The waistband is a 2.5 inch wide strip of scalloped floral lace.

Laying flat, the panties measure about 13.5 inches wide, comfortably stretching to about 20 inches.
The rise is about 10 inches.