This very pretty thong is from Just Be. It is a size XL.
The lace material is 90% Nylon / 10% Spandex while the sheer mesh is 95% Polyester / 5% Spandex.
The front of the thong is sheer lace with a pretty floral pattern.
The back is sheer pink mesh.

Laying flat, the thong measures about 14 inches at the waist relaxed, comfortably stretching to about 19 inches.
The rise is about 8.5 inches.