I just meant for them to be used in extreme cold in my chair. The neoprene sleeve is a nice addition but as others have said, it doesnt fit the charger. You dont want to pay $ 400 to have a car key made after you lost it and can not find it. excuse me. It would be great if others could access this in-depth review. I would recommend for small spaces. they have held up great! Se derritieron y deformaron un día que quedaron al sol y encima el pasado miércoles me las han vuelto a cobrar porque parece que no les llego la devolución! The clear plastic part and the small sun visor on it came kinda warped, like either something was laying on top of it or from heat. When I am using them, typically the case is sitting on the wireless charger or somewhere near.