Earth Day Special • Free Worldwide Shipping On Every Order
Celebrate Earth Day • 60% OFF Sitewide On All Running Gear





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Free standard shipping on orders
We are pleased to offer Free Worldwide Shipping on all orders, delivering to all countries and regions supported by our logistics network.
There are no restrictions on order quantity, parcel size, or shipment weight — every order ships at no cost to you. In addition, all customs duties, import taxes, and government-imposed fees associated with your shipment will be fully covered by us, ensuring you will not incur any extra charges upon delivery.
Please note that delivery times may vary due to local customs procedures and carrier conditions, but your shipping and customs costs will remain completely free under this policy.
We provide a secure and reliable Free Returns service for all customers. Items that remain unused and unopened may be returned within 60 days for a full refund.
All return shipping expenses, including customs-related fees, are fully covered by us.
Refund processing will be completed within 4 weeks from the date the return shipment is sent, regardless of whether the package has arrived at our facility. In general, refunds are finalized significantly earlier, ensuring a smooth and dependable experience.
Created for high-intensity and demanding activity, GU Roctane Energy Drink Mix packs even more electrolytes and carbohydrates than GU Hydration Drink Mix. The 250-calorie serving contains carbohydrates (maltodextrin and fructose) that use non-competing pathways to help maximize carbohydrate absorption and utilization while diminishing stomach distress. Sodium, the primary electrolyte lost in sweat, aids hydration by maintaining water balance. The amino acid taurine helps maintain heart contractility and improve cardiac output during long exercise sessions, while the amino acid beta-alanine helps promote formation of the intramuscular buffer carnosine.
ELECTROLYTES Maintain water balance and aid in optimum hydration. CARBOHYDRATES Deliver ready-to-use energy and delay bonking by sparing glycogen. AMINO ACIDS Reduce mental fatigue and decrease muscle damage. CAFFEINE Enhances performance by increasing focus and concentration and decreasing perceived effort during exercise.
Mix one packet with 21 oz. (620 ml) of water. During activity, drink 20-30 oz. per hour.
| US Women | US Men | UK Size | EU Size | JP CM Foot Length | Inch Foot Length |
|---|---|---|---|---|---|
| 5 | 3 | 2 | 35 | 22 | 8.6 |
| 5.5 | 3.5 | 2.5 | 35.5 | 22.2 | 8.75 |
| 6 | 4 | 3 | 36 | 22.5 | 8.875 |
| 6.5 | 4.5 | 3.5 | 37 | 23 | 9 |
| 7 | 5 | 4 | 37.5 | 23.2 | 9.2 |
| 7.5 | 5.5 | 4.5 | 38 | 23.5 | 9.375 |
| 8 | 6 | 5 | 38.5 | 24 | 9.5 |
| 8.5 | 6.5 | 5.5 | 39 | 24.2 | 9.65 |
| 9 | 7 | 6 | 40 | 24.5 | 9.8 |
| 9.5 | 7.5 | 6.5 | 40.5 | 25 | 9.95 |
| 10 | 8 | 7 | 41 | 25.2 | 10.1 |
| 10.5 | 8.5 | 7.5 | 42 | 25.5 | 10.25 |
| 11 | 9 | 8 | 42.5 | 26 | 10.4 |
| 11.5 | 9.5 | 8.5 | 43 | 26.2 | 10.55 |
| 12 | 10 | 9 | 44 | 26.5 | 10.7 |
| - | 10.5 | 9.5 | 44.5 | 27 | 10.85 |
| - | 11 | 10 | 45 | 27.2 | 11 |
| - | 12 | 11 | 46 | 28 | 11.3 |
| - | 13 | 12 | 47 | 28.8 | 11.6 |
| - | 14 | 13 | 48 | 29.5 | 11.9 |
Note: Foot length measurement is the actual length of your bare foot. All running shoe brands fit slightly differently. Wide-width options are available for most styles. For long-distance training shoes, we recommend leaving 0.5 inch extra space for toe movement.
| US Size | Chest (Inch) | Waist (Inch) | Hip (Inch) | Height (Inch) |
|---|---|---|---|---|
| XS | 30–33 | 24–27 | 33–36 | 60–64 |
| S | 34–37 | 28–31 | 37–40 | 63–67 |
| M | 38–41 | 32–35 | 41–44 | 66–70 |
| L | 42–45 | 36–39 | 45–48 | 69–73 |
| XL | 46–49 | 40–43 | 49–52 | 72–76 |
| XXL | 50–53 | 44–47 | 53–56 | 75–79 |
Apparel Note: All athletic clothes feature 4-way stretch fabric for running mobility. Compression items fit snug; if you prefer loose fit, size up one grade.
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