even a small amount of roll will not affect the use and still work

9'' H x 14'' W x 14'' D

- 5 crimp beads

There is built-in rechargeable battery in the device

proved to help improve your balance and core strength

AmazonBasics Foldable Metal Pet Dog Exercise Fence Pen - 60 x 60 x 24 Inches bed set even a small amount ofAmazonBasics Foldable Metal Pet Dog Exercise Fence Pen 60 x 60 x 24 Inches Indoor outdoor portable 24 inch play and exercise pen for dogs up to 16 inches tall Made of durable iron metal with rust proof black finish 8 connected panels, each measuring 24 by 24 inches; creates 16 square foot enclosure Sets up in seconds; simply unfold, shape, and connectno tools required; folds flat for compact storage Includes 4 thumb clips for connecting