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.
FASTCHEWS chewable tablets feature a scientifically-derived, proprietary high-performance formulation that provides a balanced supply of bioavailable sodium, potassium, magnesium, and calcium. Sodium is derived from sodium citrate, a proven source that has the added benefit of soothing the stomach. The formulation mirrors the electrolyte profile lost in sweat, in a form and quantity the body can absorb. Its non-GMO ingredients are all natural, gluten-free,vegetarian, and without artificial sweeteners or colours. Rapid absorption takes place by mouth (buccal mucosa, and then the stomach). Each easy-access flip-top bottle contains 60 chewable tablets that are easy to carry, store and transport.
· FASTCHEWS Help Reduce Muscle Cramping, Reduce Heat Stress, Boost Stamina, Maintain Electrolyte Levels.
· The ONLY chewable tablet that is formulated to closely resemble the electrolyte profile lost in sweat.
· Suggested use: 2 tablets per 15-30 minutes during activity
· Fast absorption through buccal mucosa (tissue in mouth).
· Each serving (2 tablets) contains: 100 mg sodium, 30 mg potassium, 10 mg calcium, 6 mg magnesium.
· Tart Orange and Zesty Lemon-Lime natural flavours encourage consumption.
· Bio-available active ingredients. Made in USA under cGMP (current Good Manufacturing Practice) and independently tested to be free of banned substances.
· Ingredients are: non-GMO, gluten-free, vegetarian, fat-free.
· Natural stevia as sweetener. No colour added.
· Also great for youth sports, travel rehydration, tennis and other sports, camping & hiking, effects of alcohol.
· 60 tablets per bottle.
| 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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