There are a few key features I'd like to highlight on the Leatt 3DF Airfit Body Protector:
1. It offers a premier level of protection AND comfort over anything else on the market. You don't see CE-2 back and chest armor with CE elbows and shoulders in anything nearly this comfortable. Alleluia!
2. It's quite light, conforms to your body's unique shape and appears to ventilate amazingly well (initial impression- more testing required). Even the armor itself has ventilation holes for air to pass through while still achieving an elite level of impact absorption. The garment binds itself to the shape of your body, holding armor in place while utilizing material that wicks moisture away from your skin to cool you as you sweat.
3. The sizing is relatively scalable. The suit is sized for an athletic build, but the nature of the material allows it to fit a body that isn't built like a pro athlete. Another noteworthy aspect of the sizing is that each set of armor is sized specifically to each size range, meaning different sized armor is used for each size S/M to size L/XL to size XXL.
After trying the body protector on a few times and getting a feature breakdown from Leatt, here's my feedback so far... The fit is excellent. As soon as I zipped it up I felt like I was ready to ride. I'm 5'8" 172lbs and the Small/Medium fits me perfectly. Do the arms stay in place? Yes. The shoulders are well contoured and the elbow coverage is larger than I expected without shifting around. The Moisture Cool stretch fabric holding everything in place is ideal for a pressure suit concept. It's basically a built-in moisture-wicking base layer! I like the way the fabric is cut around the inside of the elbow. You can flex, twist, bend and shake without creating any binding or shifting of the armor. The rib protection was perfectly comfortable around my not-quite-six-pack abs and the fabric extended down far enough to tuck into my pants and stay neat.
Since all the armor is foam, the entire suit is very light, and the back and chest actually have contoured edges that angle out like a pyramid from your body. The angled corners allow for better energy absorption rather than having the armor catch and get pushed out of the way.
The Leatt 3DF Airfit Body Protector uses perforated layers of foam armor. There are three layers on the chest and on the back. While standing outside with the suit on I could feel even the slightest breeze come straight through the armor and fabric. The air moves right through the holes in the armor. I was surprised by the amount of airflow through the suit. This is a key feature I'm looking forward to testing in warmer weather since ventilation is a major complaint by riders using plastic pressure suits and under armor.
The viscous and elastic foam armor in the 3DF Airfit gets harder the harder its hit. Leatt uses about six different manufacturers of foam to create this special narrow, flexible armor with CE Level-2 certification in the chest and back and CE certified protection in the elbows and shoulders. The material is pliable to your body as it warms so it remains flush to your skin for maximum protection. Special testing by Cyril Despres has helped Leatt dial in the overall fitment of the suit to be practical for a real rider.
I don't have a neck brace yet (shh, don't tell anyone) so it does appear that the chest pad is a little low, but I would think a company renowned for their neck and spine protection is going to cater their garments to accommodate a neck brace. The chest, collar and back areas all have specific features for use with a Leatt neck brace that I'll go into at a later date. None of this is a deal breaker for me even though I don't have a neck brace.
Sorry I don't have a ride test yet, but I hope this gives you a good place to start your research. Thanks for reading!