Reusable K-Cups

I got these for my keurig but they wouldn't work with the 2.0 model. I was really bummed about that but a friend had a Keurig that they did work in so I was excited to be able to gift them to someone that would be able to use them. They actually have the Keurig at work and we use it when we have a class to train 5 wks at a time which is really awsome because anyone that is in our class that drinks coffee can havea fresh cup of coffee to keep them awake and now warm since it's winter months now. They are very durable and sturdy. Can't beat the price either for 4 of them.