The storage location used for your equipment :
Before going to play, I recommend you store your equipment at room temperature, preferably at 15°C minimum. The cold (at temperatures below 5°C ) have a stiffening effect on the racket string components. If the first strokes are off-centre and your racket is very cold, you will break your racket strings much quicker. The impact is that much more intense because it is heightened by the cold. So it is strongly advisable to avoid leaving it in the boot of a car at night, in non isolated damp garages and all outdoor storage locations.