This product is literally a bunch of cheap plastic and a dollar worth of power resistors wired directly to an AC plug.  That's it!  But the resistors get hot when you plug the thing in and warm air rises and slowly dries out whatever you have perched on it.  I've dried ski boots and gloves (loosely placed on the boot attachment) numerous times and the results are perfect.  Despite being a bit flimsy the dryer has no problem balancing on soft carpet even with a pair of heavy ski boots perched on top of it.  Also, it hasn't been hot enough to affect the thermal molded liners in any of my boots even when they're left on overnight.  In a simultaneous comparison, it worked faster than a noisy, fan-driven - but not heated - competing product.  I would highly recommend the MaxxDry dryer.