Portable baby bath tubs; Portable baby baths, namely, bath tubs for bathing a baby and also for use in weighing a baby by holding and containing the baby while the baby is on a scale; Portable baby baths also featuring an integrated scale; Portable baby baths also featuring a display for showing the weight of a baby; Portable baby baths also featuring a water thermometer; Portable baby bath tubs, namely, warmed-up bath tubs for bathing a baby; Portable, foldable baby baths tubs