I have no idea what they dyed these pajamas with but by Goodness they smelled horrific. Beyond acetone - just awful. They were also cut smaller since my husband can normally wear a large pajama bottom but he said no way, no how - which I was relieved because based on the smell I was afraid of what whatever they were dyed with could do to his skin. Returned them ASAP and bought a replacement pair from a different vendor. Buyer beware on these guys.
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