Here are the pants for B2. I adapted an Ottobre pattern, adding an extra layer in the knees.
These pictures were taken after a day at school, so you can see why extra reinforcement in the knees is needed.
The goofy kid won’t stand still for a picture, but in person he is quite quiet and shy.
On another note, I made an apple pie for Canadian Thanksgiving. I had to run the garbage outside and when I came back in, this is what I found: