this one is an immediate winner, the texture and feel of the slow rise sugar ball is top notch even compared to other sugar balls i have in my collection. the rubber does have a sticky feel to it which i enjoy but i could see that being a downside to some, especially since i have cats and need to be careful not to get any of their fur on it. there's no residue transfer to your hands however so it's purely a sensory experience. fits easily in my hand, and will definitely be a go to when i need to stim or calm down!