Oh, why hello there! I just bought a 160 cm rexion (imitation leather, I guess) heavy bag. I've hung it up in my garage. An unheated garage. I live in central Norway, and in the winters, it's not uncommon for temperatures to drop to -15 or even -20. Is this harmful to the longevity of the bag? Should I bring it inside for storage? Can I use it even though it is very cold, if I should wish to do so? or will it be like punching a block of ice or something...?