I did it to my car an was really amazed at the results. anyways the things you need are
1.Iron with steamer works best
2.100% cotton shirt if it's not this you will damaged your leather!
3.patience
4.A beer
Now turn the iron to the hottest setting, then put the T-shirt in top of the leather where it has wrinkles,saggy,or cracks, then just iron the shirt an put pressure on it and steam it at the same time,keep the iron moving don't leave it in one place it will burn the leather an you would be screwd. I did it to my drivers seat which was really saggy and the heat stretches thr leather leaving it to it's original form like new. I did it on my friends lexus is350 and came out perfect. Anyone doing this an is successful please comment and remember I am not responsible for damaged leather or burning yourself thank you an ENJOY

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