The OptiVISOR is a little on the heavy side, ...
353929
The OptiVISOR is a little on the heavy side, but it does deliver on exactly what it says it would.  Two other machinists use theirs, as do I, to inspect carbide tooling for microfractures due to machining Titanium.  I can clearly see the microfractures.
3446195
The weight is heavy a bit, but the appearance is good!
4588797
Solid works well just a little heavy and the rolling feature doesn't work very well.
596768
It is very powerful.
However, It`s a little bit bigger and heavier than I thought.
4613091
The cold insulation effect is very good, worthy of recommendation, is a little heavy weight.
3913534
I like the color and resistence but it is a little heavy, besides that at the end it works fine.
4107079
The idea is cool. The LEDs gliding through the hair is fun but the actual barrette is too heavy and bulky.
2502269
The other reviewers complain about the Ray Stopper dropping down when not in use, but I find the hinge is adjustable. One could tighten it so that it won't drop down. However I have to admit that the adjustment is a little tricky. It either too loose or too tight. It's hard to get it just right. My 2 biggest issues are: 1. The hinge is bulky leaving a big gap between Ray Stopper & my car's visor. As you can see in the product image. Sun can easily shine thru it into the driver's eyes. 2. This yellow plastic visor distorts whatever the driver sees making road signs harder to see. You'd feel like you're seeing thru a glass bottle's bottom.
3645168
The product is a little  larger that I expected.
2506371
Worried that it would be too heavy but it is OK.
441732
I like this very much,  but the heart on the side adds weight and it ends up lopsided most of the time.
221264
Nice design, however, it appears to be a little heavy on the router bearings...and that's a 3.25hp. Allen head has the tendency to strip after long time use.
1234847
It's a little smaller than I imagined it, but it's pretty heavy, so it works well.
1694969
A little bit heavy, but good quality for the price
1849014
Good protection. A little bulky and heavy but that is definitely an obvious trade-off.
1431104
It's a little heavy, but I am happy with the purchase
1945515
It is slightly heavy that my glasses tend to slide down. Slightly lighter tint would have been better.