Bring vinegar and water to a boil in a saucepan over medium heat. Stir in sugar to dissolve and simmer 15 min, stirring occasionally. Remove from heat and let cool to room temperature.
Pour over prepared cucumbers in a bowl, toss to coat, chill in refrigerator until ready to serve.
Extra dressing can be refrigerated and used within a week.
Recipe by Stephi Gardens at https://stephigardens.com/cucumbers-mid-summer/