Thanks @johnnycanuck and @Zombie_61 So it seems that there is more than one way of doing this. I took the foam out and it does not feel like the hat will blow off my head even though it's slightly too big so I will leave it out for now. I guess I am slightly long oval. If I put slight pressure on the sides of the crown then the hat tends to make contact almost around the whole circumference. I need to wear the hat for longer each day than the 20 minute dog walk to get it to start "taking shape". It's warming up here in SoCal with temps. in the low to mid 70's over the next few days. That should help build up a bit of a sweat!