Earth Day Special • Free Worldwide Shipping On Every Order
Celebrate Earth Day • 50% 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.
Our C30 Energy Gels are widely considered to be the next evolution of energy gels. Formulated using a 2:1 glucose-to-fructose carbohydrate blend, our C30 gels deliver 30g of fast-absorbing carbohydrate and 200mg of sodium, with an exceptionally low risk of gastrointestinal distress.
30g of carbohydrates per gel
Easy on the stomach
2:1 maltodextrin-to-fructose ratio
The gold standard
Formulated using 2:1 glucose-to-fructose carbohydrate blend. 30g of fast-absorbing energy and 200mg of sodium per gel. Thinner consistency than other gels so you can take with or without water. Mild in flavor to minimize the risk for gastrointestinal problems.
Usage instructions
Consume 1-3 C30 Energy Gels per hour of exercise, depending on your needs.
| 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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