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Expert Reviews

Experts are hikers, who post reviews at youtube, directly at RunRepeat or at their own websites. Each expert is categorized from level 1 to level 5 based on expertise. See stats on expert reviews and how we calculate scores here.

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92 / 100 based on 4 expert reviews

  • 97 / 100 | Misadventures

    This spring, these remain my favorite shoe, period.

  • 97 / 100 | The Loadout Room

    I’d stack the TR1 Merge up against anything in its class.

  • 95 / 100 | Dirtbag Dreams

    As someone who often combines water activities with hikes, I love that I can just take one pair of shoes that do it all.

  • 80 / 100 | Canoe Kayak Magazine

    While this boot does an excellent job at what it is intended for, it has some specific drawbacks. Namely, the weight and warmth.

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Updates to Astral TR1 Merge

  • A multi-season backpacking boot, the Astral TR1 Merge sports a breathable and quick-drying upper, complete with protective overlays. Its over-the-ankle design is rounded out with a padded mesh tongue.
  • Absorbing shock on every landing is the TR1 Merge’s stout midsole made of ethylene-vinyl acetate (a.k.a EVA). What keeps users planted on slippery surfaces, on the other hand, is the footgear’s aggressively lugged, non-marking rubber outsole.

Astral TR1 Merge size and fit

The Astral TR1 Merge is an adequately true-to-size, mid-cut boot for male and female trekkers. It comes in standard width. It is offered in full and half sizes. Its lace-up closure makes fit personalization possible. The pull loop on the heel speeds up on and off.


Delivering traction on the trail is the TR1 Merge’s high-friction and abrasion-resistant rubber outsole. Based on the Astral-exclusive rubber compound called G.15, this component—with its aggressive, 5-millimeter lugs—grips on both natural and man-made surfaces, may they be wet or dry. It possesses a decent amount of flex and is non-marking to boot.

Astral engineers extended its forefoot tip all the way to the upper. In so doing, they have given the gear extra forefoot protection.


Serving as the boot’s stabilizing platform is its EVA midsole. Its noticeably thick construction is designed to cushion the foot against sharp and pointy hazards as well as mitigate shock with every stride. It comes engineered with Astral’s Top Shank—an added component that provides additional medial support, thereby lessening foot fatigue.

Right on top of this beefy layer is the TR1 Merge’s removable insole. It delivers added cushioning, and since it is Polygiene treated, proactively prevents odor buildup.


This Astral gear encloses the foot in a fast-drying, breathable upper made of canvas. Its protective overlays—the heel and toe caps—are made of thermoplastic polyurethane (TPU). It is crafted with a heel counter which grants extra rearfoot stability. The boot’s interior is also padded (around the collar and on the tongue) for a comfy backpacking experience.

The gear’s closure system features eyelets of different types. The lower half is comprised of D-rings which are made of brass, while the remaining ones from the top of the instep up are fabric loops and regular eyelets.