My boys had a blast running through the inflatable obstacle course, climbing the rock wall and jumping in the bounce house. My littlest guy wasn't left out either, there were plenty of ride on toys and balls for him to kick around. During the open play session they had a monitor person not just watching the kids but helping them over the tougher parts of the obstacle course. He even took my youngest son down the big slide and from then on I couldn't get him out.
The open play sessions change from week to week so it's best to check their website for dates and times. In addition to open play, Jumping Jack Sports offers sports classes for children and for a fee you can hold your child's birthday party here. Restrooms were available and clean. No snacks are allowed inside the building so the play area was very clean.
Even though the open play session was only an hour and a half the kids were pooped out once we got home and took a long nap. If it's yucky outside come check out Jumping Jack Sports in Ashburn.