Sizing is very important. We would recommend taking our free Fit Consultation using the following link: https://www.evelo.com/support/free-fit-consultation/
This will help determine what your needs are, and which models to take a look at. Your height and saddle height are the most important numbers to focus on. Taking a measurement on your current bike from the top of the saddle straight to the ground is a great way to compare your bike, with the different models we have available.
If you’re looking for a bit more technical information, scroll down on any bikes product page and you’ll find specific sizing information for that particular bike. Also, take a peek at the our site wide sizing chart here: https://www.evelo.com/sizing/