Hymaz 9-Inch Knobby Balls Set of 5 – Soft Sensory Bouncy Balls with Pump for Kids, Toddlers, Stress Relief, Party Favors

This set of five Hymaz Knobby Balls provides soft, 9-inch inflatable bouncy balls in assorted bright colors (red, blue, green, yellow, pink). Each ball is made from thick rubber with a textured spiky surface, designed for sensory play, stress relief, and gentle bouncing games for toddlers and kids. The set includes a pump and needle for easy inflation and deflation.

What Comes in the Set

• 5 sensory balls: one each of red, blue, green, yellow, and pink
• One hand pump with inflation needle
• Balls measure 9 inches in diameter when fully inflated
• Total weight of all items: 0.26 kg (approximately 0.57 lbs)

Soft Rubber Construction for Safe Play

The balls are made from thick rubber that holds air well, so they stay bouncy longer without frequent reinflation. Despite being firm enough to bounce well, the material is soft enough to be safe for indoor use — they won't damage walls, windows, or furniture. The lightweight design makes them easy for small hands to grip, throw, and catch. The spiky knobs on the surface provide tactile stimulation and can be used for massage or sensory therapy.

How Big Are the Balls When Inflated?

Each ball inflates to a diameter of 9 inches (about 23 cm). This size is large enough for active play but still easy for toddlers to hold.

Technical Details at a Glance

Common Questions About These Sensory Balls

Can these balls be used outdoors?

Yes. Their lightweight design and good bounce make them suitable for outdoor games like catch, throwing, and bouncing in the yard. The rubber material is durable enough for grass and pavement.

Are the balls safe for babies or very young toddlers?

The balls are made from soft, thick rubber and are light enough not to cause injury if they hit a child. However, as with any small toy, supervision is recommended for children under 3 years due to choking hazard from the needle or pump parts.

Can adults use them for stress relief or massage?

Absolutely. The spiky texture provides a gentle massage sensation when rolled in the hands or against the body. Many adults use them as stress balls or for sensory stimulation.

What if the ball doesn't stay inflated?

The balls are made to hold air well, but if a leak occurs, the included pump makes reinflation quick. If you have any issues, the manufacturer offers customer support.