Invisible and lightweight. opt for precious brown microfibre briefs from Dim InvisiFree! We love: The ultra comfortable. covering shape. The fine. lightweight microfibre. which fits like a second skin. 100% invisible under your clothes thanks to the thermo-glued finish. Comfort and lightness unite in the Dim InvisiFree precious brown microfibre briefs! With a covering shape that's super pleasant to wear. these women's panties are made of soft. lightweight microfibre fabric which lies invisible under your outfits. thanks to its thermo-glued finish.