Tree Climber Trousers, by Go To Patterns. I think these were designed for my little Dr. Destructo here. Padded knee patches, a slim fit and plenty of pockets for storing rocks. They're perfect.
Johnnie B Good Hoodie by Shwin Designs, but with the regular collar. Both options are included in the pattern. It features your choice of short or long sleeves, back yoke and front yoke patches as well as a breast pocket option. Tons of options in this one pattern!