4/5
I always wear something - usually a workout shirt or cotton shirt underneath the device for reference below.
Pros:
High heat is HOT HOT HOT
If your muscles react to heat/hot stones/etc - this works well
Great for posterior and anterior shoulder capsule surfaces
Cons:
High heat is HOT HOT HOT - even with a layer between device and skin I now won't go higher than 2 out of 3
Won't penetrate to labrum or extremely deep
No armpit/underarm coverage
Overall - worked better than expected. I use it 2 x day.
Wish the control module was transferable between wraps (ie like Venom Go) so I can buy one control modules but multiple wraps. Cheers - keep up the great work Hyperice!