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Salomon X Ultra 4 Mid Winter TS CSWP - Women's Review

Lightweight, supportive, and warm enough for trail or everyday use but a short shaft limits protection from winter elements
salomon x ultra 4 mid winter ts cswp for women winter boots review
The boot kept us super warm when moving but didn't feel warm enough when stationary in colder temps.
Credit: Liz Chamberlain
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Price:  $165 List
Manufacturer:   Salomon
By Liz Chamberlain ⋅ Review Editor  ⋅  Dec 19, 2022
76
OVERALL
SCORE


RANKED
#7 of 16
  • Warmth - 25% 7.0
  • Weather Protection - 25% 6.0
  • Comfort and Fit - 20% 9.0
  • Traction - 15% 9.0
  • Durability - 15% 8.0

Our Verdict

The Salomon X Ultra 4 Mid Winter was a fun winter hiker to test. It performed great in the field as we took it through a variety of terrain and outdoor chores to test traction, coverage, and waterproofness. The boot is comfortable, supportive, lightweight, and noticeably breathable. It stands out as a winter trail running shoe, but it doesn't outshine the other winter hikers in our lineup in traction, and warmth is lacking when standing still. If a comfortable, flexible, 2-3 season hiker is what you're looking for, the X-Ultra 4 Mid Winter is a great option, but the lack of coverage may limit its functionality during cold winter months with deep snow.
REASONS TO BUY
Lightweight
Supportive yet flexible
Grippy
Breathable
REASONS TO AVOID
Low coverage
Thin upper

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Awards  Editors' Choice Award Top Pick Award Best Buy Award  
Price $165 List
$164.95 at REI
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$210 List$120 List
$120.00 at REI
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Overall Score Sort Icon
76
89
84
81
68
Star Rating
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Pros Lightweight, supportive yet flexible, grippy, breathableUltra warm, removable liner, thick rubber outsole, impressive waterproofing, great tractionFull coverage protection, highly durable, reliable tractionGood value, ultra warm, great traction, highly waterproofSoft liner, lightweight, decent traction, tough nylon upper, cushy PU footbed
Cons Low coverage, thin upperSomewhat heavy, bulkier designPricey, very heavy, retains moisture, difficult to drive inOnly ankle-high coverage, hiking-specific style, narrow fitRuns small, not as warm as others
Bottom Line Lightweight, supportive, and warm enough for trail or everyday use but a short shaft limits protection from winter elementsA comfortable, true to fit, ultra-warm and waterproof winter boot with a durable and structured exteriorThis highly durable boot is completely waterproof and great at insulating, though it's a bit too bulky to wear on low-snow days or during high-output activitiesThis well-priced boot hits all the marks with a winter-friendly design that maintains great traction, weatherproofing, and warmthThis is a comfortable and durable boot meant for casual use but isn't quite warm enough for the coldest weather
Rating Categories Salomon X Ultra 4 M... Baffin Chloe Muck Boot Arctic Ic... Merrell Thermo Chil... Columbia Minx Short...
Warmth (25%)
7.0
10.0
8.0
8.0
6.0
Weather Protection (25%)
6.0
8.0
9.0
7.0
7.0
Comfort and Fit (20%)
9.0
9.0
7.0
9.0
7.0
Traction (15%)
9.0
8.0
9.0
9.0
7.0
Durability (15%)
8.0
9.0
9.0
8.0
7.0
Specs Salomon X Ultra 4 M... Baffin Chloe Muck Boot Arctic Ic... Merrell Thermo Chil... Columbia Minx Short...
Maximum Puddle Depth Before Major Leaking 4.5" 9" 16" 6" 4"
Measured Shaft Height (from bottom of sole to top of shaft) 6" 10" 16" 6" 6.5"
Measured Weight (per pair, size 7) 1 lb 5 oz 2 lbs 8 oz 4 lbs 8 oz 1 lb 13 oz 1 lb 4 oz
Type of Boot Winter hiking All-around winter wear Winter workwear Winter hiking Casual winter wear
Fit Details True to size True to size Runs big True to size Runs small
Lining/Insulation Polyester Comfort-Fit multilayer foam Fleece M Select Warm (200g) Omni-Heat reflective
Removable Liner? No Yes No No No
Footbed EVA EVA bioDEWIX Kinetic Fit BASE Removable PU
Upper Material Leather, textile Suede leather Rubber Waterproof PU-coated leather and mesh Waterproof woven synthetic textile, suede
Toe Box Rubber Rubber Rubber Rubber Nylon and rubber
Outsole Contagrip W rubber Polar Rubber Vibram Arctic Grip A.T. M Select GRIP Omni-Grip rubber
Company Claimed Cold Weather Rating Not stated -40°C/-40°F Not stated Not stated -32°C/-25°F
Temp Change in Ice Bath -7.2°F -4.1°F -9.5°F -5.2°F -9.7°F
Animal Products? Yes Yes No Yes Yes
Sizes Available 5 - 10 6 - 11 5 - 11 5 - 11 5 - 12

Our Analysis and Test Results

The X Ultra 4 Mid Winter delivers multi-functional construction made to enhance comfort, stability, and movement during winter trail use. Thanks to a sleek, modern design, the boot can transition between work and play purposes, feeling like it can go anywhere and accomplish anything. Its biggest setback is a low cuff height, meaning less coverage to keep snow out of the ankle area and, therefore, keep your legs warm in colder temps. The boot is also quite thin and provides less warmth than we hoped for. That said, if you're focused on finding a winter hiker that feels more like a running shoe, this is the boot for you.

Performance Comparison


salomon x ultra 4 mid winter ts cswp for women winter boots review - we took this boot out in shallow and deep snow, up and over rocks...
We took this boot out in shallow and deep snow, up and over rocks and hills, to work, and around town. It's quite comfortable and decently versatile within its wheelhouse.
Credit: Guy Eriksen

Warmth


With 200g of 3M Thinsulate insulation lining the interior of the X Ultra 4 Mid Winter, the boot keeps you warm when moving. The liner is constructed of 100% polyester faux fur, which traps heat to keep the feet warm. The lining is breathable, and the ClimaSalomon Waterproof membrane maintains dryness during higher-intensity hikes. Salomon's temperature ratings for the boot are as follows: 23°F/-5°C comfort, 14°F/-10°C limit, and 5°F/15°C extreme. Most temperature ratings seem far-fetched, but these particular stats feel fairly accurate based on our experience.

During our 2-hour snow bank coverage test, the boots experienced a 17°F temperature change and a 7.4°F change in our ice bath test. These were higher than average compared to the test group, and during our field tests, we could tell the boot's heat retention wasn't as good as some of the fur-lined boots. This is most noticeable in stationary or low-output activities. If you use this boot for winter hiking or trail running, it's a great option. If you intend to use it for more casual purposes, you may find that it lacks long-term stationary warmth.

salomon x ultra 4 mid winter ts cswp for women winter boots review - we left our test boots in a snow bank for 2 hours, taking the...
We left our test boots in a snow bank for 2 hours, taking the temperature before and after to gauge how drastically the interior temperature of the boot would change in a stationary environment. The X Ultra 4 isn't the best choice if you won't be moving.
Credit: Liz Chamberlain

Weather Protection


The X Ultra 4 Mid Winter has solid all-around weatherproofing thanks to the ClimaSalomon waterproof layer in the upper. It's more flexible and lightweight than its beefier sister model made with Goretex, yet we have a feeling it offers comparable waterproofness.

salomon x ultra 4 mid winter ts cswp for women winter boots review - we measured the x ultra 4 mid winter shaft at 4.5", or 6" measured...
We measured the X Ultra 4 Mid Winter shaft at 4.5", or 6" measured from the outsole to the top of the tongue.
Credit: Liz Chamberlain


The shaft height of this boot measures 4.5 inches at its lowest point and 6 inches at its highest. Our socks and ankles got a bit wet and cold after stomping around in fresh snow. Luckily, the exterior of the shoe is great at shedding moisture, but that didn't keep some snow from clumping up in the cuff. If you will be in deep snow, we highly recommend utilizing gaiters.

salomon x ultra 4 mid winter ts cswp for women winter boots review - water entered the x ultra 4 mid winter at the boot's shaft height...
Water entered the X Ultra 4 Mid Winter at the boot's shaft height (4.5"), proving its waterproofing capabilities are strong despite a low profile.
Credit: Guy Eriksen

Comfort and Fit


The X Ultra 4 is a comfortable, form-fitting, ankle-high hiker. Salomon shoes tend to err on the narrow side, and this boot felt snug yet true to size and roomy enough for thick wool socks. The stock footbed doesn't have much shape or structure, so inserts may be worth buying if you need extra arch support. The interior liner is supported by a 4mm EVA "winter sock liner" foam footbed that is soft and warm to the touch.

salomon x ultra 4 mid winter ts cswp for women winter boots review - the footbed in the x ultra 4 mid winter is thin and flat but the...
The footbed in the X Ultra 4 Mid Winter is thin and flat but the internal midsole felt super supportive beneath the arch.
Credit: Liz Chamberlain

For those who enjoy hiking and trail running, the X Ultra 4 Mid Winter will have a familiar feel. The shoe has an energetic and supportive feel from the midsole with a stretchy upper aimed to enhance lateral movement. An Active Support stretch panel is seam-sealed onto the outsole of the boot and attaches to the laces, reinforcing a snug fit around the center of the foot. The drawstring laces offer a nice tight fit, while hooked eyelets keep the laces firmly locked in when tied.

salomon x ultra 4 mid winter ts cswp for women winter boots review - the x ultra has an easy and secure lacing system balanced by an arch...
The X Ultra has an easy and secure lacing system balanced by an arch support strap made for a close, snug fit around the entire foot.
Credit: Guy Eriksen

Traction


The X Ultra 4 Contagrip outsole is stiff and sturdy, with a heel base measuring over 1.5 inches thick. The tiered lug pattern performed great on the trail, though it wasn't entirely slip-proof on rocks and inclines. We really like the lugs on the outer rim of the sole that splay out to add stability when the boot is on edge.

salomon x ultra 4 mid winter ts cswp for women winter boots review - the x ultra 4 mid winter had solid traction on everything but icy or...
The X Ultra 4 Mid Winter had solid traction on everything but icy or packed down trails, where frankly, we needed it the most.
Credit: Guy Eriksen

The Advanced Chassis (ADV-C) system provides reinforcements directly beneath the arch to enhance stability around the outer foot, improving mobility in uneven terrain. Overall, we felt confident going uphill and downhill in the X Ultra 4. The lugs aren't 100% grippy on icy surfaces or snow-laden rocks, but they helped us crunch through a snowy trail run confidently.

salomon x ultra 4 mid winter ts cswp for women winter boots review - the traction profile on the x ultra 4 mid winter appeared to be...
The traction profile on the X Ultra 4 Mid Winter appeared to be burly but didn't perform as consistently well as the other hikers in our lineup.
Credit: Liz Chamberlain

Durability


The X Ultra 4 may be thin and pliable, but it was surprisingly resilient in our durability testing. We smashed and scraped the boots against rocks, trees, ice, and pavement and found minimal damage besides some scrapes along the rubber toe and outsole edges. The upper is made of a mix of leather and "textile," according to Salomon's website, though it was difficult to distinguish the difference between these materials. Regardless, the boot seemed resistant to water damage and harsh conditions. While these materials may weaken over time due to tougher use on winter hiking and trail running trails, the boot remained strong throughout our testing period.

salomon x ultra 4 mid winter ts cswp for women winter boots review - after knocking the boot against rocks, trees, ice, and pavement, the...
After knocking the boot against rocks, trees, ice, and pavement, the X Ultra 4 Mid Winter showed zero wear and tear aside from light scuffs.
Credit: Liz Chamberlain

Should You Buy the Salomon X Ultra 4 Mid Winter TS CSWP?


This is a great option for those who need a work-and-play boot that serves up mobility, breathability, and comfort. It's lightweight and supportive enough to wear throughout the day and performs well on inclined snowy hikes. The price tag feels a bit high when considering the boot's lack of coverage, though that may not matter to you. Additionally, if you live in a colder climate or are looking for a full-coverage option, there are likely better options. But if you want one boot oriented towards work and winter recreation, this is one to consider.

salomon x ultra 4 mid winter ts cswp for women winter boots review - a lightweight, quality hiking boot that can go from work to play.
A lightweight, quality hiking boot that can go from work to play.
Credit: Liz Chamberlain

What Other Winter Boots Should You Consider?


If you like the hiker-style snow boot but are looking for something a little beefier or warmer than the Salomon X Ultra 4 Mid Winter, you may like the Merrell Thermo Chill Mid or the Keen Revel IV Polar. Both of these boots scored well in our review and fall within a similar price bracket. The Danner Inquire Mid Insulated is another toasty warm hiker-style shoe that can double as an everyday boot.

salomon x ultra 4 mid winter ts cswp for women winter boots review - the thermo chill mid and the revel iv are two award winners that are...
The Thermo Chill Mid and the Revel IV are two award winners that are a great alternatives to the X Ultra 4 Mid Winter.
Credit: Liz Chamberlain

Liz Chamberlain
 
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