Washing Mighty Grip gloves?

I just bought a pair of Mighty Grip gloves, and will be trying them out today. 🙂 But I was trying to find care information for them and haven't had any luck. Can you wash Mighty Grip gloves? After debating about it, I finally decided to machine wash my "work" gloves that I've been using and laid them flat to dry. Made them a little stiff for a bit, but they softened right up after a few minutes of use. I hope I can wash these new gloves...what have you guys done to clean your gloves? Machine wash? Hand wash?