Spec
Hyperice Hypersphere Mini
RAD Roller Original
Price
$99
$25
Rating
4.6 ★
4.7 ★
Diameter
3.2 in
2.75 in
Firmness
8/10
8/10
Vibration
3 speeds
None
Battery
2 hrs
N/A
Weight
12.8 oz
6 oz
+3-speed vibration
+TSA carry-on approved
–$99 for a ball
–Heavier than passive balls
+Spine-safe peanut design
+Stays in place
–Awkward for single points
–Mid-tier price