As Sqwincher comes in a wide range of great-tasting flavors, it may be difficult to find a favorite. With Fast Pack, the compact pouch that doubles as a cup, you can keep as many delicious flavors on hand as you like. Isotonic formula ensures maximum absorption and quick rehydration. Magnesium, potassium, sodium, calcium and electrolytes keep you strong and energized, helping you stay at the top of your game.