I don't know what's up with these gloves.  I have several pairs of Heat Holder socks and have been exceedingly pleased with them so far.  These gloves I'm not happy with at all.  I've been wearing them in casual ways, not using them for any sort of physical labor or manual work.  No contact with rough or abrasive surfaces.  Just wearing them outside when it's chilly but not cold, when driving, and while taking photos.  Nothing even remotely approaching intense usage.

The first several times I wore these, I kept thinking "why didn't they extend the thick insulation into the partial fingers?"  I'm still wondering why.  The effect created is having quite comfortably warm wrists, palms, and backs of hands, but then chilly half fingers, and then cold half fingers.  The exposed finger areas are going to get cold, it's built into the design.  But the other half of the fingers could be much warmer with some additional insulation.

Additional layering and stitching would also help with the other issue I've encountered (the dealbreaker):  I'm already losing the half-finger of the pinky on the right glove.  I pulled the glove on this afternoon before going out to check the mail, walked into the 30 degree, 25mph wind, and mild hail/sleet conditions and could instantly feel cold wet wind rushing into the large hole separating the right partial pinky finger from the palm piece.

Hey, I have big hands and thick fingers.  (Hello ladies.)  But I suspect that it's just the way these are sewn, since they fit perfectly fine but spontaneously started to fall apart.  I didn't feel anything rip or tear.  I simply looked down and discovered that the stitching was coming loose and a large hole had formed.

Fingerless thermal gloves are certainly a niche market.  I can appreciate that.  I just expect a $20 pair of gloves to last more than a month or so of casual usage.  The partial finger pieces should be designed and constructed as well as the rest of the glove appears to be.