4 inch Therapy Ball for Release Hip Flexors, Pain Relief for Lower Back Thigh Muscles, Small Exercise Ball for Physical Therapy, Blue

Easy ball to inflate and useful for physical therapy exercises. I was instructed to do some physical therapy exercises for my knee and was told either use a small ball or a rolled towel. I tried the rolled towel first, but it didn’t work dry well. This is ideal for what I need and small enough just to store when not in use. I can also take it when I travel as it comes with a pump, which is great

Have had only for a week but this is very helpful (I bought as Cooch Ball dupe) -- and while I have not tried the wildly priced original version, this seems to be working fine. I hope it doesn't deflate but it works great. It is soft as I want (as much as you inflate!) works perfectly to sit on in terms of size and seems durable.

Love this small ball. It is perfect for my exercise class

I needed a small ball for some of my exercises, and it's surprisingly hard to find one. This is not 4", it's smaller and fits easily into the palm of my hand, but it serves the purpose I needed it for. It does not blow up to a round ball, it's an odd shape, but again, it works for what I need it for. What I'm using it for: a cushion and resistance between ankles and feet to perform rehab exercises.

Perfect for my chair Pilates class!

This therapy ball works well to relieve muscle tightness.

Very disappointed Don't waste your money. The pin broke immediately & it cannot be inflated without it.

This was a great buy to replace two Miracle balls that deflated over time and couldn't be reinflated. Just the right size, and comes with a good pump.

After a lot of searching, I bought this as a more affordable version of the "cooch ball," since it's the same size & comes with a pump. It inflates well & doesn't burst when you sit on it. I recommend this product.