Collection: Synthetic Urine with Hand Warmer & Temperature Strip

Temperature is where cheap synthetic urine fails. Real body temperature reads 90 to 100 degrees F, and a kit that cannot reach and hold that range is not worth whatever it costs. Every Upass kit ships with both pieces of the temperature system in the box: two Hot Sacks air-activated hand warmers that hold 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 extra air-activated hand warmers that bring a bottle to temperature in about 45 to 60 minutes and give 8+ hours of heat. See the official heating instructions for both methods, and what a complete kit with a warmer contains, then pick your kit below.