Chumia18 Inch Fun Bouncy Balls 5 Pcs Rubber Inflatable Beach Ball Bouncing Sensory Playballs with Hand Air Pump for Park Backyard Beach Indoor Outdoor Party Favors

So these are "play balls" as retailers call them, PVC roto-moulded bouncy balls. They are very similar to the balls found in a big rack at big box stores in the US, except these are a nice big 18 inch diameter. They are more durable than a beach ball, less so than a yoga/gym ball. Most sellers on Amazon do not include much in the way of instructions for use, so here are some pointers:1. Inflate the balls to a size less than rated (say 16-17 inches diameter or when firm) and allow to rest for a while. This type of plastic has some memory effect to overcome upon re-inflation. These balls will reach final size in 24 hrs.2. Use an automatic pump/compressor. The hand pumps which are included are a nice gesture, but are really painful to inflate a big 18 inch ball with, much less all six included balls.3. Keep away from sharp objects, thorns, rocks, etc. Note that surface scratches degrade the balls' strength.4. Some dogs love to chase and bite these, just don't let them eat the plastic if it pops.I gave these five stars because the quality/durability is what I expected. The colors were accurate with the balls I received.

Big enough not to have our Collies be able to bite through them. They love to “boop” them with their noses!

Came with ready to use pump so balls were fully inflatable and ready to throw and bounce in minutes. Balls came in several beautiful colors.

This ball is shown in advertising picture at 18 inches across. However it’s more like 12 1/2-13 inches across instead.So this ball is way smaller than I was expecting. Other balls on Amazon of this smaller size are listed for cheaper. Overall the quality is okay. Just hit the true size as listed

I started to inflate one of the balls. At first, I thought it was fully inflated around the size of 14.5'', smaller than the seller claimed (The ball was harder to the touch around that size). However, I read a review that says to keep inflating until it reaches 16''-17''. Against my instinct, I kept inflating. I reached the right size after a few minutes. (It was still tightly)My kid helped to inflate all the balls with the pump. He really enjoying play with them, especially outside the house. He loves the colors of each ball.From all the 5, the blue one was softer to the touch around 18'' inch.P.S: I recommend to use electric pump with these balls. The provided pump is fine but for inflating one at a time (not all 5 at once)

None of the balls were the same size and none were 18 inches. The largest was about 12 inches when fully inflated. The rest were even smaller. I bought these so each child would have the same size and be equal.

I bought these for a specific purpose to hold up patio covers on a table and 4 chairs. They needed to be 18" so I ordered these as described as 18" in diameter. Well.... as lots of bad descriptions here.. these only measured 13" when blown up to nearly bursting. I am returning. Beware... if you really want an 18" ball, these are not for you!

My 2 year old Grandson loves balls, and I bought these for Christmas - so easy to blow up (thank you!)