Best Hedgehog Heat Pad

This is the best heat pads I have found for hedgehogs. 
 Warming Pad provides a controlled heating area with balanced temperature distribution to add warmth for your pet. The low wattage is safe for direct touch contact without scalding.
 
SAFE: Low wattage, safe for direct touch contact.
EASY TO USE: Waterproof and damp-proof, can be used under a plastic tub or tank
TEMPERATURE CONTROL: Switch manually between 32℉ to 105℉ (0 to 40 ℃) to reach desired temperatures within short time.
 
Wattage: 20 Watt
Materials: Made of high-quality nichrome heating wire and great PVC material.
Measurements: 16.5 X 11 X 1/8 Inches
Warning: No automatic shut off. No temperature reader. Do not place in cage with animals. Do not put the unit in or near open water.