We’ve read the reviews across the web for the Troy Lee Designs A2 MIPS Helmet and summarize the results below:
Universal Ranking
PeakScore: 92 (out of 100)
User Rating: 4.8 stars 
Expert Rating: 4.2 stars 
Number of Ratings Reviewed: 125
Pros & Cons
Reasons to buy:
User Reviews
- Good airflow.
- Dual-density foam and MIPS technology for superior protection.
- Secure chin strap that does not loosen while riding.
- The pads are removable for easy washing.
- Very comfortable.
- Easy to adjust.
Expert Reviews
- Good ventilation.
- Fixed strap splitter to manage the chin strap.
- MIPS technology for increased safety.
- Pillowy padding for a comfortable fit.
- Good fit adjustment.
- Lightweight.
- Polycarbonate shell enclosing EPP/EPS to protect from bumps while not being used, and offering more structural support.
- The bolts of the visor are designed to snap during a crash to prevent rotational forces through the head.
- Designed to protect from both high and low speed crashes.
Reasons NOT to buy:
User Reviews
- No space to put goggles above your eyes when not in use.
- A larger, bulkier helmet than similar models.
- The visor does not adjust low enough to be a good sun shield.
Expert Reviews
- The visor is barely adjustable, which is particularly annoying if you ride with goggles.
- The field of vision is reduced, but it does offer better impact protection.
- The thick pads over the forehead can drip sweat into your eyes.
Summary:
The Troy Lee Designs A2 MIPS Helmet is breathable, comfortable, and one of the most-thoroughly designed helmets out there when it comes to safety. With dual-density foam, MIPS technology, and a break-away visor, it is designed to redistribute and neutralize impact from both fast and slow crashes. While comfortably padded, the helmet does not sacrifice on ventilation, with efficient vents and a lightweight feel. Common complaints are about the visor, which does not allow space for goggles, while also not sitting quite well enough to block out low sun.