What does extreme heat do to your speedy?

i dont think anything realllllly happens. the vachetta might get a bit darker. the canvas will be fine but after i leave mine in the car it feels all squishy and what not.
 
Great bag!

The heat is not really good for the bag. It will cause the canvas to eventually "crack." You can use the Coach leather conditioner and condition the entire bag every now and again. Also, as said before, the leather will darken faster.

If you are going to leave your bag in the trunk then maybe you should go for something like the new LOVE tote, or the antigua... those are also great bags!