Clean, Crash-Free Energy for Busy Days: High caffeine tea bags with 135–150mg caffeine — as much as a strong cup of coffee — powered by natural L-theanine for focus, not jitters. The perfect energy tea to replace your second cup of coffee or fuel long Zoom days. | Natural Focus Tea Backed by Science: Our unique caffeine + L-theanine combo delivers smooth, sustained energy and mental clarity. Trusted by over 1 million customers and voted “Top New Product” at the World Tea Expo, it’s the #1 best-selling high caffeine tea in the U.S. | Healthier Coffee Alternative, Gentle on Your Stomach: Skip the acidity and anxiety of coffee. Zest’s high caffeine tea bags offer a cleaner caffeine boost that’s easier on digestion and non-GMO, Keto-friendly, and sugar-free — perfect for health-conscious professionals and parents alike. | Energizing Variety Pack for Every Mood: Enjoy an energy tea assortment box of flavorful black and green breakfast teas designed for focus and performance. Ideal as morning tea or a midday recharge, each pyramid tea bag is plastic-free and individually sealed for freshness. | More Energy, Less Crash — Naturally: Each sip fuels focus and productivity without the coffee crash. Whether you’re a focused professional, busy mom, or academic grinder, Zest helps you stay alert and calm. Includes 6 pyramid tea bags, 135–150mg caffeine, and no sugar.