Being the tester, I have an oval or egg shaped head and the Zappi fit me very well however there was some extra spacing on both sides of my temples that caused the helmet to wiggle just a little bit. I believe a person with a more rounded head would be the ideal fit for this helmet but don’t let my review sway you should you have a more oval head. The fit for me was very good. Both head shapes should work fine, but again, if you have a round head you’re in the sweet spot for sure.
The inside padding of this helmet is excellent. NOW has done a good job of ensuring that the padding is all the way around the forehead and across the top of the head. The padding spans the entire length of the helmet from front to back which I like. As with most helmets, the padding is an Anti-Bacterial wicking material and is easily removable and washable. In my opinion the more padding in the helmet the better. I have owned helmets where, for whatever reason, there isn’t enough padding inside the helmet to make the fit snug or comfortable especially for longer rides. The ZAPPI has no issues with either, they did it right the first time and the fit is spot on.
The side strap slider/buckle is “non-locking”, meaning it simply slides up and down the strap. I for one like the locking strap adjustments and I would hope that NOW could incorporate that into their helmets. I prefer my helmet strap a little snug. I like the side straps and buckles up against my face and just below my ears when riding. I noticed after each ride that the left side buckle would slip just a little bit. I would have to adjust the left side strap buckle back up each time before every ride. The right-side strap buckle was perfect and never slid down.
The rear dial of the Zappi is much like any other helmet dial-in system. NOW Helmets calls this dial system the EQDF or Easy Quick Dial Fit system. I particularly like the attention to detail that the dial has using the NOW logo modeled in it. This to me represents NOW “paying attention to the details”. The micro dial worked very well and I could adjust the tension with no problems before and during the ride. Each click of the dial felt secure and snug.
The internal plastic head harness has a 3-position vertical adjustment for the back of the helmet which works well. This feature is found on most helmets in this price range as well as some middle level helmet ranges in the market.
The Zappi does have a Skeleton Inner Construction System or what NOW refer to as S.I.C. This basically is an inner plastic skeleton or “bones” that is surrounded by the dense foam that makes up the helmet. This allows for a much stronger helmet without adding weight.
The Zappi comes in 2 sizes. Small/Medium (53cm-59cm or 20.8-22.8 inches) and the Large/Extra Large (58-63cm or 22.8-24.8 inches). The model that best fit me was large. I prefer to have a little extra adjustment for those rides when a cap or winter hat is necessary.