Collection: Synthetic Urine with Heating Pad & Temperature Strip

Temperature is where cheap synthetic urine fails. Real body temperature is 90–100°F, and a kit that can't reach and hold that range isn't worth whatever it costs. Every Upass kit ships with both pieces of the temperature system in the box: an adhesive heating pad that holds the bottle in range for up to 8 hours, and a temperature strip mounted on the bottle so you can verify the reading at a glance.

Need heat for longer, or warming without a microwave? The Hot Sacks bundles add air-activated hand warmers that bring a bottle to temperature in about 45–60 minutes and keep producing heat for up to 10 hours. See the official heating instructions for both methods, then pick your kit below.