Directions Fully charge insoles prior to first use. To charge, move power switch to OFF position, plug in charging cable and connect to any USB charger or computer port. Insoles should charge fully in about 5 hours. For more information please see detailed instructions on www satisfactory To use: Move power switch to ON position and press either medium or high heat on the remote. Trim insoles in from the toe to fit shoes or boots. Do not cut past line or it will invalidate the warranty.