Okay I have been wearing a Giro Air Attack Shield for about 4 years now and it's the best helmet I've ever had however Jay recently bought a cheapie helmet that looks like a Giro knockoff and really liked it so I did the same thing
 
Here's the helmet, looks almost exactly like my Giro
 
https://www.amazon.com/gp/product/B0731LNRJ3/ref=oh_aui_detailpage_o08_s00?ie=UT F8&psc=1
 
Grand total $32.97 so it can't compare to a $200 Giro right? well yes it actually can...
 
The fit and finish isn't quite as good as the Giro, maybe 95% there and it's not uncomfortable on my large lizard head
 
Ratchet is a large round knob that's actually easier to adjust than the Giro AND on occasion while riding with the Giro I had to push it forward but never had to do that to the Basecamp
 
Front shield held onto the helmet by 3 magnets which appear to be much more powerful than the Giro but the magnets rattle if you move the shield around, this isn't an issue during the ride
 
Front shield is larger than the Giro's and the view is GLORIOUS! Maybe because its new and not scratched up yet but I was impressed, slight optical distortion around the nose area but you don't notice it while riding, thought it might touch my nose which would be annoying but it never did
 
Shields are about $18 compared to the Giro's $40, I even tried mounting the Basecamp shield on the Giro but the magnet polarity is reversed and they repel each other, bummer
 
Not bad for $33 bux

Nice looking.  After checking it out it also appears there is a more open design similar to a conventional road type lid withthe shield as well.  Price point in in the $39 range
 
https://www.amazon.com/Base-Camp-Cycling-Detachable-Magnetic/dp/B01IF0YOTO/ref=p d_sim_468_1?_encoding=UTF8&pd_rd_i=B01IF0YOQC&pd_rd_r=XDW6EGQB4CK0NWMQBXMW&pd_rd_w=1CYUh&pd_rd_wg=DxOBs&refRID=XDW6EGQB4CK0NWMQBXMW&th=1

Quote from Mdicke on Jul 17^th, 2017, 10:19pm:

 
I've never had a problem with needing a more open design, I've ridden the Giro in +100 degree weather and never felt hot in fact it worked better than my previous open air Giro, might be because it provides more shade?
 
Basecamp also makes a shield that integrates in the shell and apparently pulls back inside the helmet although I can't find them for sale in the US, looks interesting but might be fragile
 
http://www.basecampsport.com/product/90.html

Quote from Mdicke on Jul 17^th, 2017, 10:19pm:

 
I have the red version of that helmet. I like the fact it doesn't slide down and let the shield ride on my nose, like my three GIRO Air Attack Shield helmets do. Very comfortable helmet with some nice features. A real bargain at $40. These are not "one size fits all" helmets, so when ordering them off Amazon, pay attention to the head diameter range listed under the helmet description.
 
I'm going to order more of them in different colors. I could order six of them and the total dollar amount would still be less than what I paid for my first Air Attack Shield helmet.

Jay you need to start with this one for your collection: https://www.amazon.com/Basecamp-Children-Skating-Protective-Crocodile/dp/B01N4C0 GU2/ref=sr_1_12?ie=UTF8&qid=1501189120&sr=8-12&keywords=basecamp+bike+helmet

Quote from JimFPU on Jul 27^th, 2017, 4:03pm:

 
Jim, I'll wear one of those helmets after I install a surrey top on my trike.  

Quote from JimFPU on Jul 27^th, 2017, 4:06pm:
 
You go, Boy!!  
 
 
Quote from JimFPU on Jul 27^th, 2017, 4:06pm:
Wrap the tape measure behind your head and around your nose.  (snicker, snicker!)
 

Heck I'd wear it on the HHH 100  it would be all that more entertaining