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Bern Bike & Sports Helmets: Brentwood All Season w/ Flip Visor Liner

$22
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DealGenius.com has various Bern Bike & Sports Helmets on sale for $22. Shipping is free on $29+ orders or is otherwise $5. Thanks f12_26

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Edited November 3, 2019 at 12:11 PM by
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Created 11-01-2019 at 05:45 PM by f12_26
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#31
Quote from supersteals
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My kid is getting interested in skateboarding. Can I use this for skateboarding? Is this helmet good in protecting the head/brain on impact? Is this a good helmet for long term?
The only problem with using a helmet like this is that it's a "one-and-done" helmet. So one crash and you should throw it away and get another one. That's fine for cycling (or skiing) where you almost never crash, but many "skate" helmets use a multi-hit liner instead. They use Expanded Polypropylene (EPP) instead of this, which uses Expanded Polystyrene (EPS). So if you think your kid is going to crash and keep wearing his helmet, I'd suggest looking for something with a multi-impact liner. Protec (SXP liner) or POC (EPP) both make them, but I'm sure that there are others. Just look for multi-impact, or multi-hit.
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#32
Only small available.
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#33
Quote from Kumicho
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Not only do they all have to pass the same tests, but I would bet money that the $10 Disney Princess helmet would have a lower G value (x-times the force of gravity when dropped from a specific height, recorded in the headform) and therefore would be *safer* in a crash than this helmet, or pretty much any $100 helmet that you could buy.

Styrofoam is cheap, and works great at slowing down the deceleration your head in a crash. Since you can't actually lessen the force (F=MA), what you do is spread the overall force out over a longer period of time to reduce the max force on your head/brain.

If you crash without a helmet, you'll get an instantaneous spike of 1000g (probably more). With a helmet that spike is broadened out so that the impact is spread out over a longer period of time, reducing the max G forces imparted on your brain. CPSC max is 300g. Many helmets try to reduce the size (and therefore the amount of EPS foam) so it doesn't look like you're wearing a dorky Styrofoam cooler on your head, but that results in higher G forces (still under the 300g limit, though).

But hell, if you don't care about looks, or airflow, or comfort, or style, then yes, the $10 Disney Princess helmet with 4" of plain EPS foam is probably going to be safest.
For a child. How about from a teen/adult? And would your arguments hold water with peers? What if you soak the material in sweat for example? Like after riding for six hours? Or it's raining heavily. How is this material developed to justify the cost point? What about the shape of it around the head and the latch points? The wear and tear, etc etc etc..
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Last edited by Zizka November 4, 2019 at 08:33 AM.
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#34
Quote from Zizka
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For a child. How about from a teen/adult? And would your arguments hold water with peers? What if you soak the material in sweat for example? Like after riding for six hours?
Unless the child is under 5 (there's an "Infant" CPSC certification), all helmets have to pass the same adult certification. They just usually make them smaller (so a "child small" helmet would be an adult XS/S for example). So assuming you'd fit whatever size the Disney helmet was (say, if you were a woman with a smaller head, or if you fit a "child's large"), my earlier comment would still apply.

All helmets have to pass the same drop test under 4 conditions: ambient, hot, cold and wet. Hot is temperatures 117-127F, cold is 1-9F, and wet is submerged in water, all for at least 4 hours. You literally take the helmet out of a garbage can full of water before strapping it to the headform. This is also done for the strap test as well. Wet straps stretch the most (which is tested for to ensure that it doesn't stretch too much), while buckles are more likely to break under cold temperatures.
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#35
Quote from Kumicho
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Unless the child is under 5 (there's an "Infant" CPSC certification), all helmets have to pass the same adult certification. They just usually make them smaller (so a "child small" helmet would be an adult XS/S for example). So assuming you'd fit whatever size the Disney helmet was (say, if you were a woman with a smaller head, or if you fit a "child's large"), my earlier comment would still apply.

All helmets have to pass the same drop test under 4 conditions: ambient, hot, cold and wet. Hot is temperatures 117-127F, cold is 1-9F, and wet is submerged in water, all for at least 4 hours. You literally take the helmet out of a garbage can full of water before strapping it to the headform. This is also done for the strap test as well. Wet straps stretch the most (which is tested for to ensure that it doesn't stretch too much), while buckles are more likely to break under cold temperatures.
So all the bases are completely covered for everyday use with a $10 Disney helmet? Kinda hard to believe but I guess it should be true. Not that there's a $10 anything Disney but I get the idea.
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Last edited by Zizka November 4, 2019 at 09:12 AM.
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#36
"But tests recently conducted by Consumer Reports reveal that some bike helmets may not provide adequate protection in the event of an accident -- even though helmet makers say they meet current voluntary industry safety standards. The problem is that current standards do not address a major design attribute -- roll-off resistance -- the ability of a helmet to stay put on the wearer's head during a crash. This characteristic is essential to protect cyclists from head injury." -- Washington Post

good article about how ALL helmets are not created equal.

https://www.washingtonpost.com/ar...1d6d090b7/
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Last edited by Zizka November 4, 2019 at 09:17 AM.
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#37
Quote from Zizka
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So all the bases are completely covered for everyday use with a $10 Disney helmet? Kinda hard to believe but I guess it should be true. Not that there's a $10 anything Disney but I get the idea.
From a safety standpoint, yes. It's why we have government regulations in the first place, so that anything sold as a bicycle helmet provides at least the base level of protection (including cheap $10 ones).
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#38
Quote from Kumicho
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From a safety standpoint, yes. It's why we have government regulations in the first place, so that anything sold as a bicycle helmet provides at least the base level of protection (including cheap $10 ones).
False. Read the Washington Post article about how all helmets are not created equally.. worth keeping up the pressure on the manufacturers to go above and beyond when it comes to safety or lawsuits..
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#39
Quote from Zizka
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False. Read the Washington Post article about how all helmets are not created equally.. worth keeping up the pressure on the manufacturers to go above and beyond when it comes to safety or lawsuits..
Notice I said "base level", not "equal". As noted, some helmets protect you better than others. But all will provide a base level of protection, and more expensive ones don't necessarily protect you better than cheap ones.
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#40
Quote from Zizka
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Seems cheap for a bicycle (etc) helmet. Is it safe; does it give good protection? If you're going to wear one (which is a very good idea) may as well get a good one and they normally run at the very least $60+.
Appreciate the discussion between yourself and Kumicho.

When you pay more for a bike helmet, much of your money goes towards making it lighter, smaller, more aerodynamic, and better-ventilated. The only prominent safety-related benefit of spending more is MIPS. So the generalization that a cheap helmet works fine, has truth to it. You just might be sweaty and slower, but for a casual frugal rider thats ok.

I should point out that the Washington Post (Consumer Reports, really) article you linked is nearing 30 years old and that safety standards incorporate rolloff tests now.

For example, the product in the OP meets EN1078, which includes that test:
https://en.wikipedia.org/wiki/EN_1078

The other major standards seem to as well:
https://helmets.org/stansumm.htm

(Can't see the actual standards docs cause you have to pay for them).

I'm sure it's possible to find some flaw in the current standards, but does that make them useless? And is there a better alternative? Third party tests like the ones that CR does are great, but they don't replace the role of standards.
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#41
Quote from Kumicho
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Styrofoam is cheap, and works great at slowing down the deceleration your head in a crash. Since you can't actually lessen the force (F=MA), what you do is spread the overall force out over a longer period of time to reduce the max force on your head/brain.
Didn't mean to criticize you in your discussion with Zizka, but I noticed a something a little off about this quote. When you said "since you can't actually lessen the force," did you mean "you can't actually lessen the impulse (I=Integral(F)*dt)?" The whole point of helmets are to actually reduce the peak force being applied by reducing the acceleration, but the overall change in momentum is the same. It's kinda like how using a ramp makes the task of moving/lifting objects to a higher ground easier, but the overall amount of work applied to the system is the same. However, in this case, the overall amount of momentum is the same, but spread through a more gradual process (i.e. changing the amount of time that the amount of momentum is transferred).
To be fair to you in your discussion, I definitely think that there is a law of diminishing return in effect with helmets' safety, with high end helmets only costing so much because of their aesthetic and/or aerodynamic design, not for their safety. I, myself have a $40 Giro helmet (Giro Revel), and the more expensive versions have better vents, better aerodynamics,and/or better coloring. Personally, I went with the Giro helmet because it fits me much better than any Walmart helmet (trust me, I've bought a few myself), which is important, because having a good fitting helmet would allow it to remain in the correct position when impacted. (Although this helmet goes for $40 normally, it can go on sale for like $25 at Dick's, which is a really good sale imo)
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#42
Quote from Kumicho
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The only problem with using a helmet like this is that it's a "one-and-done" helmet. So one crash and you should throw it away and get another one. That's fine for cycling (or skiing) where you almost never crash, but many "skate" helmets use a multi-hit liner instead. They use Expanded Polypropylene (EPP) instead of this, which uses Expanded Polystyrene (EPS). So if you think your kid is going to crash and keep wearing his helmet, I'd suggest looking for something with a multi-impact liner. Protec (SXP liner) or POC (EPP) both make them, but I'm sure that there are others. Just look for multi-impact, or multi-hit.

Thanks a lot for the information! I had no clue about the multi-impact liners... I will shop for the right kind!!
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#43
I'm trying to find 2 helmets for my sons ski trips, but no size looks like they'll fit. I found this on WM...Is it a good brand? urlhasbeenblocked


http://www. walmart. com/ip/urlhasbeenblocked-Ski-Helmet-Snow-Snowboard-Helmet-with-Detachable-Inner-Padding-Lightweight-Helmet-for-Women-Young-M-L-Size-5-Colors/663894667
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Last edited by Sugarbabie December 8, 2019 at 04:52 PM.
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