This Christian Dior white high leg, high rise, narrow sided thong, Style 035800:  is simple at the front and back with seams at each hip side and at the back gusset. The white elastic edging the waistband, leg sides and thong stem has Dior written across.  This collection was bought 2002/3 so is vintage.

THE FRONT PANEL:  The V shaped font panel is in plain soft white microfibre, from the hip sides to the back gusset 
seam.

THE GUSSET AND THONG STEM:  From the back gusset seam to the top of the thong stem and along to the hip 
sides is in one piece of white microfibre.  The gusset is lined with white Jersey cotton.

The composition of the narrow sided thong is 81%Polyamide, 12%Elastane, 7%Cotton.   Christian Dior states that 
these may be machine or hand washed at 30 degrees.  Do not bleach, tumble dry or dry clean.  Coolest iron if 
necessary.  New and unused.  Made in France.  The retail price was £24.40

In this 035800 Collection:  There are the matching thongs in black.   They are listed separately. 

The 10 UK/US, France 40, CEE 38.  
The 12 UK/US, France 42, CEE 40.   
The 14 UK/US, France 44, CEE 42.  
The 16 UK/US, France 44, CEE 42