WAA is a European brand known for its very slim fit, which differs from North American sizing standards. We strongly recommend consulting the provided WAA sizing guide. As a general rule, choose at least one size up from what the guide suggests. If you are at the upper end of a size range, consider going up two sizes.

The Trail Runner Store does not assume responsibility if the sizing is still not a perfect fit for you.

Specially developed for the hottest weather conditions, the Ultra Light T-Shirt is our lightest and most breathable shirt yet. Its soft and comfortable fabric acts as a second skin, keeping you dry by wicking away sweat at the surface of the shirt. The Ultra Light T-Shirt only weighs 65g, giving you the impression you have nothing on your shoulders.