Pros: budget friendly, material used feels sturdy and adequate (the shell and styrofoam seem close to the same as triple 8 sweat saver), comes with an adjuster on the back for better fit, removable pads, has a classic skateboard helmet look, and it is cpsc certified bicycle helmet.The thickness of the shell and styrofoam padding looks on par with the triple 8 sweat saver and the shell looks slightly thicker.Cons: not astm certified for skate safety. No sweat saver padding. Because its not astm certified theres a warning label that says to replace after its been involved in an accident and to replace if an impact has occured.Durability: undetermined. Only used about 4 times but has been tossed around over a few months and the material is holding up. The pads feel pretty standard. I've not yet fell on my head wearing this but I believe the folks who said have and this has saved them. I wish I had worn it when I fell backwards in a pool with no helmet leading me to have a slight concussion.Sizing: I don't agree with their sizing chart. I measure at a 22" or 56cm. Based on size chart I should be a medium 19.7-22". I bought a small red color (18.1-19.7") and medium grey color.The small size fits and looks way better on me than the medium. Because its smaller it doesn't feel that much unbalanced on my head. I also dont feel like I'm sacrificing any protection going smaller. Triple 8 sweat saver measures (s/m 21-22.5" or 53-57cm). The triple 8 s/m size feels smaller than the medium size jbm and closer to the size of a small jbm.The medium size fits thanks to the adjuster. It feels significantly bigger than the small, doesn't look as good on me (head looks like a mushroom), and my head feels unbalanced due to its size. It feels like a bulky tank helmet. Perhaps this would be better suited for folks with a lot of hair that measure in the medium size.Depending on your measurement and how much hair you have I would go for the smaller size category. In my case I am a 2.3" size difference going to a small. Only way you'll know for sure is by trying it outComparison to the triple 8 sweat saver:The t8 right off the bat fits very snug on me and doesnt move. Its quite comfortable more than jbm. I also like the look of it slightly better than the jbm. T8 has dual cert and sweat saver pads with additional thicker pad linings. T8 doesnt have an adjuster so if it doesnt fit well for you the only range you get is with the pads where as jbms adjuster has more range for fit.Verdict: good budget helmet if you dont care about dual cert or astm certification. Helmet whether certified or not will almost always be better than no helmet. However, because this helmet is not astm certified, the budget nature of it to me works against it. If I had to replace it after every impact, I would be spending the same if not more for a helmet that is astm certified for multiple impacts. Use at your own risk if it has had a single impact before.The other issue I have despite these certifications is, for the laymans person it is hard to tell the difference in quality between this and the dual certified triple 8 sweat saver helmet. Yes the certification tells you with certainty one can take multiple impacts but looking at the jbm I feel like it could pass a multiple impact test.If JBM is confident in their helmet they should get dual certified cpsc and astm this helmet. That would certainly give this helmet an edge over its competitors. Kind of sus that they dont although even worse 187 killer helmet has zero certifications and is sold in the same price range as triple 8 and protec.