Spec
RAD Roller Original
Yes4All Spiky Massage Ball Set
Price
$25
$12
Rating
4.7 ★
4.5 ★
Diameter
2.75 in
2.9 in
Firmness
8/10
6/10
Vibration
None
None
Battery
N/A
N/A
Weight
6 oz
4.2 oz
+Spine-safe peanut design
+Stays in place
–Awkward for single points
–Mid-tier price
+2-pack under $15
+Spikes stimulate circulation
–Spikes too much for some
–Softer core