The Overalls is a pattern for frogs by Clare Garland. Patterns for making frogs can be purchased from Claire Garland.

I recommend you to knit frog dolls with 3mm needles.
If you usually knit clothes or if your hands are loose, knit with 2.75mm needles.

Without buying this design, you can watch my YouTube videos and create an overalls. However, if you want a printable pattern, I recommend you buy this design. I modified the design several times, so the fit is better than the design in the video.