5 Pack Emergency Mylar Thermal Sleeping Bag 84"x36" Spring steel rods at each

Spring steel rods at each with adjustable weights at each end provide the vibration that influences the wave frequency

- Up to 20MHz output frequency and 5V peak-to-peak amplitude

to classroom essentials

1mm inner diameter

5 Pack Emergency Mylar Thermal Sleeping Bag 84"x36" Spring steel rods at each5 Pack rescue sleeping bags provides compact emergency protection in all weather conditions Made of durable insulation Mylar material Retains reflects 90% of body heat Waterproof and weatherproof Each bag measures 36" x 84" when fully opened Each comes individually wrapped and folded to be small enough to fit in most first aid kits 5 Pack. These disposable rescue sleeping bags keep in body heat and preserve body temperature. Made of durable,