Yogaswing in classic model with wide part to sit in and three handles on each side. The handles can be disconnected if you want to use the swing separately. The handle can also be used as a TRX. This is a very fun and rewarding supplement to ordinary asana on the mat, If you have a sore back this is a good help.
To turn the body upside down has been scientifically proven to support the body in various ways.