Full Review in Amazon.co.uk : http://www.amazon.co.uk/gp/product/B00AZFEFR4?tag=easyjardin0f-21

Topstar Sh27bb4e Sitness Junior Half Ball Fitness-Stool - Orange

Trendy Fitness-Stool three-dimensionally movable by an integrated air filled half ball which can be used as a playing or training equipment
Three-dimensionally movable seat
By opening the zipper you can take out the half-ball which ensures fun and excitement in the childrens room
Instruciton poster with exercises is included
Decorative and solid alusilver coated aluminium base