Keepons are not one size fits all and because of How Keepons Work, a fitting is recommended to ensure that you select a style of Keepons that will fit your glasses.
The fitting process takes about 5 minutes and you can do it yourself from home.
If you don't have time and would like to buy without a fitting, these styles will likely fit.
The 2 step Keepons fitting process involves:
1) Measuring your eyeglass temple tip diameter and temple bend diameter
2) Matching your measurements to compatible Keepons styles