I made your thong last night, couldn't find any black lycra so used Space Cadet blue metallic foil print on black lycra. It is like crocodile skin.
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Since that wasn't plain black lycra I thought you might also like to try this PU (polyurethane) coated lyca thong. I haven't used this fabric in water before. The old PVC coated lycra used to come off the backing easily if overstretched or wet etc. It looks like rubber and you might enjoy it.
Let everyone know how it feels and lasts.
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Both items going in the mail now.
Hard to photograph an 3D object while holding it flat.
Also hard to reduce photo size to be accepted here.