I love this little bean bag for typing. I find having one for each wrist is much more comfortable than one long rest. The beans are much more comfortable and responsive than other rests.
This might be too small for some people since it's only about 3.5" across but it's perfect for my skinny little wrists. The pillow is nicely-shaped to support a wrist makes using a mouse or keyboard a little more comfortable and seems sturdy enough that the beads won't start spilling out during use. You can't really ask for more than that for under $7.
Within an hour of using small little balls started coming out of the wrist rest. Upon checking 2 small holes were found where the balls were coming out of with every movement of the wrist. Very dissatisfied with this product!
Too small not supportive enough; mine also had a small hole in it leaking the tiny plastic beads/pellets all over my desk. Perhaps better suited for tiny hands and wrists and I should have sprung for the larger one (which hopefully doesn't have a bead-leaking hole).