The weighted stainless steel beads roll between fingers beautifully. Many rub the cord also. This fidget is super soft in effect.   You can push your fingers in between the beads for a similar sensation to the pea popper.  

It is particularly great for those that stim with fabric, Blu-Tack rollers or like low sensory input as it glides between the fingers & is very calming. It is small, discreet and quiet. Given it is a quiet fidget, it makes it ideal for the workplace, travel or the classroom.