Adjustable Dumbbell Barbell Kettlebell review. 1. Finally, the long-awaited Instant Adjustable Dumbbell Barbell Kettlebell has arrived. It took about two days to arrive, and it was delivered in a sturdy paper box in excellent packaging. 2. If you open the box, there is a Components I'm happy that it's all shipped in clean condition. 3. Finally, the Adjustable Dumbbell Barbell Kettlebell is about..
