Review on 50cm Diameter SPRI Balance Trainer Sport - Dome Shape Half-Exercise Ball with Non-Skid Base for Effective Balance Training, Strength Building, Toning, and Enhanced Flexibility by Adam Taylor

I bought this balance machine to continue physical therapy at home after completing my inpatient therapy. I saw this on Vine and decided to give it a try. I don't know about the company, but the hemisphere looked similar to the one I was using. The construction is pretty solid. The base made of dense plastic with. Basic? Rivet? sticking out of his side. The ball is inflated from below, it is easy to turn over. The included air pump is the cheap option I have with every yoga ball. The ball needs to be inflated twice - first once, then left for 24 hours to allow the material to stretch, then deflated and then inflated again. There should have been something in the kit to help with ball plug removal (it's really hard to remove) but re-inflation didn't add much value. The end ball is not as strong as I would like as it is more difficult to balance on than the one I used in therapy. I would have hoped for a more durable ball. Three stars because the half ball didn't convince me. I'll try deflating and reinflating to see if it stretches more and if so I'll give it a star.