Is the Terrex Skychaser GTX truly waterproof?

Yes. It has a GORE-TEX membrane, so it keeps water out in rain and on wet trails. It is not a wading boot; deep stream crossings can still get water in over the collar.

How does it fit compared with other Adidas hiking shoes?

It has a regular fit but runs on the narrow side, similar to Adidas trail runners. If you have wide feet or wear thick socks, consider going up half a size.

Can I use it for running and fast hiking?

Yes. The Lightstrike foam and 10 mm drop give it a run-like ride, and it is light enough for fast hiking. It is less supportive than a stiff backpacking shoe under a heavy pack.

How does it compare with the Terrex AX or Free Hiker?

It is lighter and more cushioned than the AX line and less bulky than the Free Hiker. Choose it for speed and comfort on day hikes; choose the Free Hiker for more support and a taller, sock-like build.

One pair of shoes with the speed laces already fitted. Insoles are the OrthoLite sockliner that comes installed.

Is it good for winter or snowy trails?

It handles cold, wet and muddy conditions and keeps feet dry. The lugs are moderate, so for ice or deep snow you want a shoe with a more aggressive, softer-compound outsole.