Jack is now crawling... not just army crawling, but using his knees crawling! His legs are pretty strong and I know he will probably be walking soon. We still put him in his walker and he LOVES it. We got this walker before Ellie was born from my friend Rani who had it as a backup at her mom's house. It's probably over 10 years old at least. I like it because it's smaller than the ones you find in the stores now. Jack usually plows through anything in the way and can even maneuver over the rug. I usually find him with odd things he picks up on the way - kitchen towel, a book or toy, nick's laptop plug, my underwear or a pillow. Here's a video of Jack and his walker.