Verdict from 8 user reviews

10 reasons to buy

  • A majority of Sirius II GTX wearers praised the great fit of the boot.
  • Some hikers felt confident in climbing technical trails because the boot easily fits crampons.
  • Since the Sirius II GTX has a wider forefoot, a couple of owners shared how more comfortable and free of pressure pains their climbs and walks have become.
  • Most owners noted that the boot’s Vibram Alpin Light sole afforded them great grip on rocky, snowy and icy terrain.
  • A few owners wore their Sirius II GTX on Himalayan trips where temperatures go below zero. They expressed that the added insulation kept them warm and comfortable.
  • Some satisfied wearers were glad about the footgear’s two-way lacing system that holds the foot comfortably in place.
  • Investing their money on a pair of Hanwag Sirius II GTX was worth it according to some owners.
  • Some shoppers found a unique charm in the heritage behind the handmade boot. They commented that this adds to its production value.
  • To a few buyers, Sirius II GTX is a pair they can wear for any occasion.
  • Most Hanwag Sirius II GTX owners said they would recommend the product to their friends.

1 reason not to buy

  • A user pointed out how some imperfections can turn off some shoppers.

Bottom line

The iteration of the Hanwag Sirius GTX earned praises from mountaineers and hikers for doing well in the fit and grip departments. Its fit performance was lifted to reach excellence by the footgear’s two-way lacing system and sufficient forefoot space. Overall, this high-alpine mountaineering boot does not disappoint in most fronts. It’s no surprise Hanwag Sirius II GTX owners would let their friends know about their awesome experience with this product.

Good to know

  • The Hanwag Sirius II GTX is a versatile boot designed for high-alpine mountaineers. As a Hanwag category D boot, is is made for challenging terrain where glaciers, ice, and firn are found. It is suitable for ice climbing.
  • The Sirius II GTX retained most of the features of its predecessor, the Sirius GTX. The  most prominent differences between the two models lie in the sole system and upper material.
  • The earlier version, the Sirius GTX, uses a separate Vibram Alpin outsole and memory plastic. On the other hand, the Sirius II GTX uses a Vibram Alpin Light sole unit.
  • The previous iteration uses Bergrind leather that’s known most for being water-repellent. The latest version uses cowhide leather. This material has a rugged appearance.
  • Sirius II GTX is suitable for trips in cold regions. It has added insulation in the upper and sole unit which Hanwag promises to help keep users warm even at temperatures as low as –15 °C.  

Hanwag  Sirius II GTX is available in standard sizes. It fairly runs true to length. The boot is built on Hanwag's Alpin Wide Last. Its wide forefoot zone prevents pressure points which happen during walks and climbs.

The Click Clamp special clamping eyelets allow different lacing tensions in the mid to forefoot region and around the ankle.  Its lace-up closure, consisting of D-rings in the midfoot zone and hooks above the ankle, lets the wearer achieve a snug and custom fit.

The Vibram Alpin Light sole unit features a self-cleaning tread in the outsole. The tread helps keep detritus, snow, water and mud off the soles.  A debris-free outsole grants sufficient traction on the trail.

Sirius II  GTX features a midsole with torsional stiffness. This property limits the twisting and turning of the shoe during hikes and climbs.  

The component responsible for shock absorption is the PU wedge. There’s also a PU heel that grants extra cushioning. Also found at the heel and front end of the midsole are crampon notches.

An added TPU tip makes the boot resistant to abrasions. Thermoplastic polyurethane is a material that has wear-resistant properties.

Hanwag’s Sirius II GTX  uses a 3 to 3.2 mm thick suede cowhide leather for foot protection and shoe durability. This material is as durable as it is thick. Also, it is less likely to rip compared to other animal skins.  It is easy to maintain and has resistance to dirt and water.

The upper has fewer seams to help reduce the risk of rubbing and pressure points. According to Hanwag, a special technique is used to lessen the number of seams in some of their shoes. The cuff is fully-padded to give comfort.

The Sirius  II GTX features the Gore-Tex Laminate Duratherm and Sierra, an ultra-lightweight, microporous membrane that provides a combination of waterproofness and optimized durability. According to Gore-Tex, the lining keeps wearers dry while still providing breathability. 

Finally, the upper has the Elevated Brim, a rubber rand that goes around the base of the upper. It protects the leather from scree and rocks. According to Hanwag, this feature also helps in increasing the durability and stability of the boot.

  • Hanwag Sirius II GTX is a cement-lasted footwear. This technique allows resoling several times. Resoling is the process of removing worn-out soles and attaching or cementing a new sole unit.
  • The Sirius II GTX is compatible with step-in crampons (also called rigid step-in, clip-on, or automatic crampons). Step-in crampons provide a secure attachment and are ideal for technical mountaineering, ice climbing, and ski mountaineering.


How Hanwag Sirius II GTX ranks compared to all other shoes
Bottom 11% mountaineering boots
All mountaineering boots
Bottom 1% Hanwag mountaineering boots
All Hanwag mountaineering boots
Bottom 12% waterproof mountaineering boots
All waterproof mountaineering boots


The current trend of Hanwag Sirius II GTX.
Compare to another shoe:
Paul Ronto
Paul Ronto

Over the past 20 years, Paul has climbed, hiked, and ran all over the world. He has summited peaks throughout the Americas, trekked through Africa, and tested his endurance in 24-hour trail races as well as 6 marathons. On average, he runs 30-50 miles a week in the foothills of Northern Colorado. His research is regularly cited in The New York Times, Washington Post, National Geographic, etc. On top of this, Paul is leading the running shoe lab where he cuts shoes apart and analyses every detail of the shoes that you might buy.