Personalized dumbbell stress relievers are great for squeezing tossing and displaying so be sure to have yours customized with your company's brand for a promotional item that is sure to "work out"! 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.