Spec
Hyperice Hypersphere Mini
Yes4All Spiky Massage Ball Set
Price
$99
$12
Rating
4.6 ★
4.5 ★
Diameter
3.2 in
2.9 in
Firmness
8/10
6/10
Vibration
3 speeds
None
Battery
2 hrs
N/A
Weight
12.8 oz
4.2 oz
+3-speed vibration
+TSA carry-on approved
–$99 for a ball
–Heavier than passive balls
+2-pack under $15
+Spikes stimulate circulation
–Spikes too much for some
–Softer core