
Hydrate your runs.
Marathon season is here. Use code ATM20 for 20% off, and spend ฿1,500 or more for a free Great Human T-shirt as well.
Two rewards. One basket.
Fill your basket
Shop HYDRAMAX electrolyte boxes, the bandana, the long sleeve, whatever you need for race week.
Use ATM20 for 20% off
Enter ATM20 at checkout and take 20% off your order. No minimum spend.
Spend ฿1,500+, get a free tee
A Great Human T-shirt is added to your basket automatically. Pick your size and it's yours. Add ATM20 as well and you get the free tee AND 20% off.

Yours when you spend ฿1,500.
The Great Human T-shirt: oversized fit, cotton-poly blend, built for everyday wear. It’s worth ฿690 and it lands in your basket on its own once you pass ฿1,500.
You just choose your size (M, L or XL) from the dropdown in your basket or at checkout. Stock is limited, so sizes can sell out.
Add code ATM20 too and you get the free tee and 20% off your order.
| BASKET | YOUR ITEMS | WITH ATM20 | FREE T-SHIRT |
|---|---|---|---|
| 1 box | ฿590 | ฿472 | — |
| 2 boxes | ฿1,180 | ฿944 | — |
| 3 boxes | ฿1,770 | ฿1,416 | YES, FREE |
| 4 boxes | ฿2,360 | ฿1,888 | YES, FREE |
Examples use electrolyte boxes at ฿590 each. Shipping is not included.
- Runs 28 October to 30 November 2026 (Thailand time).
- ATM20 takes 20% off your items, with no minimum spend. One code per order, so it can't be combined with other discount codes.
- The free T-shirt is added when your items come to ฿1,500 or more. This is measured before any discount code, and it applies with or without ATM20. Add ATM20 and you get the free T-shirt AND 20% off.
- The free T-shirt is the Great Human T-shirt in M, L or XL, while stock lasts. Sizes that sell out can't be chosen.
- Standard shipping rules still apply: free over ฿1,000.