This hippopotamus stress reliever is handcrafted from polyurethane foam and is a fun way to promote your company, organization, hospital or school, while also helping everyone who receives one squeeze away the stress of everyday life! NOTE: Due to their handcrafted nature, stress ball sizes, colors and textures may vary. Factory cannot guarantee consistent imprints or PMS matches. Not intended as a child's or pet's toy. Copyright. This is a non-stock item and is produced overseas direct, available 90-120 days from proof approval. Less than minimum quantities are not available. Our grey Hippo stress balls are too cute to be fearsome. These adorable hippo stress relievers are perfect promotions to hand out at shows, fairs and all events. Have a hippo stress ball custom imprinted with your message and/or logo. These hippo balls are great ony if you are hungry for sales. SPECIAL NOTE: This stress toy is not intended for use by children under the age of three (3) and could pose a choking hazard.