Day one of work and I have my stressball in hand. It lasted all of 4 hours before it unceremoniously burst blue gunk all over a workspace. So, a momentous waste of money and I would not recommend this product at all! In fact, the innards of this product could be dangerous to young children and therefore a hazard too. Whilst I know my job is stressful, that I can break a stressball in a matter of hours is very unfortunate!