We don't offer warranty on these sheets unless they don't do well the earthing which can be easily checked with a multimeter.
Our earthing products are only shipped in Europe.
Our Earthing sheets can be cleaned once every 2 weeks with only normal detergent. No Softener should be used and the drying should be done naturally. Don't use dryer machine.
I'ts organic certified cotton with silver threads for proper grounding conduction.
On your bed or any soft surface. Any part of the body should be in direct contact with this underlaying sheet for proper grounding conduction.