Vintage Dr Rasurel French Undershirt

Vintage 60s French undershirt from Dr Rasurel an old French company that made undergarments. Clever underarm gusset design. This one claims to be "Electrostate" and good for Rheumatism? Excellent condition, appears little worn of at all. European size 42. Very stretchy jersey knit cotton. Soft handfeel. Will comfortably stretch to 38-40" Length 29"