Place the mint leaves and strawberry slices into a glass.
Squeeze in the fresh lime juice and muddle together.
Pour in the simple syrup.
Add the ice cubes.
Finally top the glass off with the strawberry flavored sparkling water.
Stir.
Garnish with a lime slice.
Notes
For the best flavor, let the water infuse with everything, except the soda water, in the refrigerator for at least an hour. Add the soda water when you're ready to serve!