Merrell Moab 3 vs Salomon X Ultra 5 GTX

Exact-spec decision matrix

The weight difference is real, but limited

Merrell lists the standard men’s Moab 3 at 460 g for one shoe. Salomon lists the men’s X Ultra 5 GTX at 13 oz, which converts to about 369 g. Subtracting the published figures gives an approximate difference of 91 g per shoe, or 182 g (6.4 oz) per pair in Salomon’s favor.

That calculation is useful only as a catalogue comparison. Neither maker identifies the exact size used for the displayed weight on these pages, and size changes weight. It does not measure fit, fatigue or how much water either shoe might hold after a wet hike. Treat 182 g as an approximate published-spec difference, not a result from weighing matched sizes.

Choose weather behavior before brand

The standard Moab 3 combines pig suede with breathable mesh and a breathable mesh lining. It has no waterproof membrane in its feature list. That makes it the more coherent option for warm conditions, dry trails and buyers who prefer a non-waterproof shoe that can vent through its upper. It is not the Moab 3 Waterproof or Moab 3 GORE-TEX sold elsewhere in the same collection.

The X Ultra 5 GTX uses a GORE-TEX membrane, Matryx upper construction and stitched upper. Salomon classifies it as waterproof and aimed at mixed, rocky and technical terrain. A waterproof low shoe can help with wet grass, shallow puddles and sustained rain below the collar. Water can still enter over the low collar, and a membrane cannot make poor route judgment or deep crossings safe.

Waterproof construction also changes the moisture decision. REI’s current footwear guide notes that waterproof hiking footwear can become hotter and less breathable. A hiker who mainly walks warm, maintained trails may prefer the Moab’s non-waterproof construction. Someone facing repeated cold rain and wet vegetation may reasonably accept the membrane tradeoff.

If you already own the standard Moab, do not assume a topical treatment turns it into the factory waterproof variant. The site’s boot waterproofing treatment comparison explains why materials and maker care instructions control that choice.

Conventional laces or Quicklace

The Moab 3 uses ordinary laces. They take longer to adjust than a one-pull system, but they let the wearer change tension by zone and replace a lace with widely available cordage of an appropriate type and length.

Salomon’s Quicklace is a thin, strong lace designed for one-pull tightening. It is fast and keeps loose bow loops out of the way. A buyer should practice securing and releasing it and confirm the pocket or keeper contains the excess as intended. Someone who likes separate forefoot and instep tension may prefer conventional laces.

Neither system rescues the wrong internal volume. Lacing can fine-tune a compatible fit; it should not be used to force a foot into a last that pinches or slides.

Support and traction claims have boundaries

Merrell lists a molded nylon arch shank, heel Air Cushion, Super Rebound Compound midsole and Vibram TC5+ outsole with 5 mm lugs. Salomon uses an Advanced Chassis insert and All Terrain Contagrip outsole. Those features establish the design approaches, but maker language does not prove which outsole grips better on your local wet rock, mud or loose gravel.

This comparison therefore does not award a traction winner. Surface, tread wear, contamination and foot placement all change grip. Both are low shoes, so neither provides the cuff coverage of a mid boot. A low collar also means gaiters or careful trouser coverage may matter in debris and wet vegetation.

Fit is the purchase gate

REI’s current hiking-footwear fitting guidance says hiking footwear should feel snug rather than tight, leave room to wiggle the toes and be tried with the intended socks. It recommends checking fit later in the day, when feet have swollen, and walking on an incline to expose heel slip or toes striking the front.

Use that method for both models:

1. Measure both feet and start with the larger one.
2. Wear the hiking socks and any orthotic intended for the trail.
3. Try the standard and wide versions where needed rather than sizing up blindly.
4. Walk uphill and downhill indoors while the shoes remain returnable.
5. Reject heel lift, persistent pressure, pinching or toes contacting the front.
6. Build distance gradually before the first long hike.

The site’s blister-care guide helps manage an unexpected hot spot, but no dressing turns a consistently poor-fitting shoe into a good purchase.

Who should buy the Moab 3

Choose the standard Moab 3 when:

• warm or mostly dry conditions make a breathable, non-membrane upper preferable;
• conventional laces and a traditional hiking-shoe format suit your routine;
• the Moab last fits your heel, forefoot and toe length in a real try-on;
• a separate wide version solves volume without excessive length;
• you accept the higher maker-listed weight.

Skip this exact variant when a waterproof membrane is a trip requirement. Compare the correctly named Moab 3 Waterproof or GORE-TEX model instead.

Who should buy the X Ultra 5 GTX

Choose the X Ultra 5 GTX when:

• a waterproof low shoe matches repeated wet, cool conditions;
• its approximate 182 g lower published pair weight matters;
• Quicklace suits your preferred adjustment routine;
• the Advanced Chassis and low-cut technical format match the terrain;
• the standard or separate wide version passes the full fit check.

Skip it when a waterproof membrane is likely to add unwanted warmth, Quicklace does not permit the needed tension pattern or the Salomon shape creates pressure.

Final pick

There is no responsible universal winner. The standard Moab 3 is the clearer choice for a breathable, conventionally laced hiking shoe on mostly dry trails. The X Ultra 5 GTX is the clearer choice for waterproofing, lower listed weight and quick adjustment.

Let weather use narrow the pair, then let fit decide. A heavier shoe that fits is more useful than a lighter one that causes heel slip, pressure or toe impact.

Sources and limits

The Merrell men’s Moab 3 page supports the standard low shoe’s materials, weight, drop and outsole. The Salomon men’s X Ultra 5 GORE-TEX page supports article identity, construction, weight, drop and intended terrain. REI’s updated fit guide supplies the independent try-on method and weather tradeoff. No comfort, drying, abrasion, grip or waterproof-duration claim was independently tested.