Premium Leather Material, Made from extremely durable and resilient PU Leather material and stainless steel heavy-duty spring, strong and durable Premium Heavy-duty CompositionMade from extremely durable and resilient PU Leather material and stainless steel heavy-duty spring, strong and durable, the punching ball itself can withstand a beating from your fist without ever becoming weakened or deflating. Perfect as stress relief office gifts for coworkers, a great gift idea for those men women who have everything Included In The Package Easy to InstallExperience the training of professional boxers to punch speed bags. The kit includes an inflatable shot, a table clamp base (stronger grip), a powerful suction cup (can be fixed on any surface), and an air pump. Just assemble the boxing ball, spring, and base together. The large suction cup base can be firmly adsorbed on various smooth surfaces and can resist strong impact without shifting. Training And Educational ExperienceImprove ADHD kids, the elderly, and convalescents hand-eye coordination, increasing speed, and agility. A cool gadgets gifts for men who have everything Take away office strain and comfort hyperactive kids by hitting these tabletop punching bags. gifts idea for him children and adults, nice Christmas gift choice for kids. Newly Upgraded Leak-proof TestRelieve stress from your desk these punch balls can attach to any surface to give you instant stress relief right at your fingertips. Do not worry We did a leak test of the product before delivery.