They are called squinchers but you can buy liquid packets or powder packets. Best taste ever and used on many job sites that are in extremely hot areas to keep the workers hydrated.
Sqwinchers are pretty much gatorade. Just marketed for industrial sites and not
everyday athletes but in terms of electrolytes included its on the light side and doesn't have any magnesium. For serious sweaters and crampers you'd be better off with a stronger product.