If your height range falls between two sizes, you will need to size up or down.
You will need to measure your arm span and compare it against your height.
If your arm span is greater than your height, go for the larger size. If it's less than, get the smaller one.
On a bigger bike, the reach to the handlebars will be longer. If you have proportionally longer arms, you are likely to feel more comfortable on a larger frame.
If you're newer to riding/haven't ridden in a long time, we recommend going for the smaller size as you will feel more in control.
Please Note: Bike sizing is based on the assumption that the rider will be on their tippy-toes when stationary. If you are not comfortable with this, we suggest going for a smaller size.