@purascans: Stanley seals the vacuum insulation in its cups with a pellet that contains lead, capped by a stainless steel disc — the company confirmed it, and Yeti uses the same method. It’s sealed away from your drink and your hands, and lab testing found no meaningful exposure while the cup’s intact — but if that base cap ever comes off, the lead is right there, and a class action says Stanley never told buyers it was in there. Hydro Flask spent five years engineering a seal with zero lead. Owala did too. ⚠️