From Marlies Dekkers Undressed, the white mesh high rise, double string sided, thong with black faux leather stripes.  Style 74931.   This thong has a white mesh panel down the front to the top of the front gusset seam.  The top and leg sides are edged with black narrow elastic and there is a second black elastic band a few centimetres down from the top which continues around the hip sides to form the lower string side, this lower string also holds in place the vertical black faux leather straps which start under the top band and converge to tuck under the front gusset seam.  In the photgraphs taken on a table these look very loose but they are in place as soon as they are put on a body.   The black faux leather straps are washable.

The top black elastic band forms the top string side and continues to form the top of the white fabric, not white mesh, panel which runs across the back of this thong.  The lower string side edges the bottom of the white back panel and then runs down the sides of the white fabric thong stem and on around the sides of the gusset and back up the front leg sides in a continuous loop at either side and the black elastic also helps to keep the white cotton lining of the gusset in place.  There is a black leather edged "letter box" across the bottom of the top wide panel at the back, here the flesh will just show through.  

This string sided thong is very simple, dramatic and it feels so soft.    The fabric consists of:  78% Polyamide 12% Elastane 10%Cotton and these thongs may be hand washed at 30 degrees,  no iron, dry cleaning, tumble drying or bleach.  New and unused.  The retail price was £28.50.   The matching white and black leather strap front fastening bras and the preformed white and black leather balconette bras are listed separately.

The S equates to UK pant size 10,   36/38   Italian I
The M equates to UK pant size 12,  38/40   Italian II
The L equates to UK pant size 14.    40/42  Italian III     SOLD OUT
The XL equates to UK pant size 16.  42/44   Italian 4