Tennis stress ball key ring will help you win the game with your customers just customise it with your logo or company name and they will remember you. Product is made with superior PU material is wonderful for relieving tension and pent up frustration. No two stress shapes are the exact same in shape, colour or density. Some chips or scuff marks are unavoidable due to variations between shipments and mass productions. Stress Shapes are not intended for use by children or animals.