Gatorlyte Powder comes in single-serve packets. Each packet is designed to dissolve in "16.9 oz" (seriously, Gatorade?) of water. The powder contains various electrolytes, 10g added sugars, and 45 calories. Within about a minute, you get a refreshing orange-flavored beverage.
Taste and hydration-wise, Gatorlyte is great. I don't generally do sugary drinks but for hikes and physically-intensive days, quick replenishment is a must.