Rossignol Comp J3 Kids Ski Boot Ski Boots - Alpine Boots - kids Rossignol 19.5
Rossignol Comp J3 Kids Ski Boot Ski Boots - Alpine Boots - kids Rossignol
Rossignol Comp J3 Kids Ski Boot Ski Boots - Alpine Boots - kids Rossignol
Rossignol Comp J3 Kids Ski Boot Ski Boots - Alpine Boots - kids Rossignol
Rossignol Comp J3 Kids Ski Boot Ski Boots - Alpine Boots - kids Rossignol 19.5
Rossignol Comp J3 Kids Ski Boot Ski Boots - Alpine Boots - kids Rossignol
Rossignol Comp J3 Kids Ski Boot Ski Boots - Alpine Boots - kids Rossignol
Rossignol Comp J3 Kids Ski Boot Ski Boots - Alpine Boots - kids Rossignol

Rossignol Comp J3 Kids Ski Boot

$169.95
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Size
5 in stock
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Junior Alpine (Resort) Ski Boot

Rossignol Comp J3 Kids Ski Boot

The Rossignol Comp J3 Kids Ski Boot is a 930-gram (size 20.5) junior alpine resort boot with a 98mm junior last, a soft 40 flex, and an ISO 5355 alpine sole, built for progressing young skiers on lift-served terrain. Three micro-adjustable aluminum buckles and an adjustable cuff dial in a secure hold, while the Comfort Fit liner keeps growing feet warm and cushioned through a full day. The Comp J3 is a resort boot, not a touring boot: it has a fixed cuff with no walk mode and no tech inserts.

Expert Fit Review Fit profile and recommendations reviewed by CCBB bootfitters.

Is This the Right Boot for You?

Best For
Progressing junior skiers with average-to-wider kid feet who need a warm, forgiving 40-flex resort boot for lessons and all-day lift skiing, and who ski with junior alpine bindings.
Consider Another Boot If
You need a touring or walk-mode boot, a stiffer boot for aggressive young racers who have outgrown a 40 flex, or a heat-moldable performance liner. The Comp J3 is a soft, entry-level resort boot with a fixed cuff.

CCBB Boot Ratings

Uphill Efficiency
1/5
Fixed cuff, no walk mode
Downhill Performance
3/5
Soft 40 flex for learning
Walking Comfort
2/5
Rubber sole, no walk mode
Transition Speed
1/5
No walk mode to switch

Rating scale: 5 = top of its class, 4 = excellent, 3 = good, 2 = specialized or below average, and 1 = limited.

CCBB Fit Profile

Overall VolumeMedium-Wide
Toe BoxWide
Forefoot VolumeWide
Instep HeightMedium
Heel HoldModerate
Ankle HoldModerate
PunchabilityLimited
Heat MoldableNo

Why We Like It

  • At 930 grams per boot (size 20.5), the Comp J3 is light and easy for progressing kids to walk in and control on skis.
  • The soft 40 flex lets young skiers bend their knees and drive the boot without fighting it, which is what learning proper turns actually requires.
  • Three micro-adjustable aluminum buckles plus an adjustable cuff let parents fine-tune the fit as a child grows within a size.
  • The Comfort Fit liner uses soft, warm materials that keep kids on the hill longer, a real factor for cold young feet.
  • The ISO 5355 junior alpine sole drops straight into junior alpine bindings, and GripWalk soles are available separately if a binding calls for them.
  • The Junior Cellular Design shell keeps the boot close to the foot with thin, light layers, which helps smaller skiers stay in control.

Best Uses

  • Learning to ski and progressing at the resort
  • Ski school and lesson programs
  • All-day lift-served resort skiing
  • Junior skis mounted with junior alpine bindings
  • Kids with average-to-wider, medium-volume feet

Bootfitter's Advice

The Comp J3 fits as a roomy, forgiving junior boot on a 98mm last, with a wide toe box and generous forefoot that suits growing kid feet. We size junior boots for a season of growth, not a tight performance fit, so we shell-fit for a thumb of length behind the heel rather than converting from street-shoe size. The Comfort Fit liner is warm but is not heat-moldable, so plan the fit around the stock liner.

Because the Comp J3 shell is a junior alpine polymer, punching is limited and we treat it as a boot to size correctly rather than modify heavily. The soft 40 flex is intentional for progressing skiers; a strong, aggressive young racer who is bending the cuff to the stops has usually outgrown this boot and is ready for the stiffer Comp J4 or a junior race boot.

Fit profile reviewed by CCBB bootfitters. Final sizing should be confirmed with a shell fit whenever possible.

Technical Specifications Manufacturer specs · Click to expand

Fit and Construction

Weight
930 g per boot (size 20.5), per Rossignol
Last
98 mm (junior)
Flex
40 (soft), Rossignol junior flex index
Range of Motion
None. Fixed cuff, no walk mode
Shell
Polyolefine and polyurethane, Junior Cellular Design
Cuff
Adjustable junior cuff

Features and Compatibility

Walk Mode
None. Fixed-cuff alpine boot
Closure
Three micro-adjustable aluminum buckles with an adjustable cuff
Binding Compatibility
Junior alpine bindings matched to the boot's ISO 5355 junior alpine sole. No tech inserts and no walk mode. Not a touring boot. GripWalk soles are available separately, which then require GripWalk- or MNC-compatible bindings.
Sole
Junior alpine sole (ISO 5355). GripWalk-compatible, GripWalk soles sold separately
Forward Lean
Needs Clarification
Liner
Comfort Fit liner (not heat-moldable)

Compare the Rossignol Comp J3

Comp J3 vs. Rossignol Comp J4

The Comp J3 is the softer, lighter step below the Comp J4. The Comp J3 runs a 40 flex on a 98mm last with three buckles, built for skiers still learning turns. The Comp J4 steps up to a 50 flex on a 100mm last with a four-buckle closure and adjustable cuff catches, which suits stronger, faster progressing juniors who need more support.

Shop Rossignol Comp J4 boots

Comp J3 vs. Nordica Speedmachine J 3

Both are soft, entry-level junior alpine boots with three-buckle closures and ISO 5355 soles for lift-served resort skiing. The Rossignol Comp J3 leans on its Junior Cellular Design shell and warm Comfort Fit liner, while the Nordica Speedmachine J 3 is a common cross-shop in the same soft-flex, progressing-skier class. Fit the child's foot shape rather than the badge.

Shop Nordica Speedmachine J 3 boots

Comp J3 vs. Lange RSJ 60

The Rossignol Comp J3 is a comfort-oriented junior resort boot with a wider, forgiving junior last and a soft 40 flex. The Lange RSJ 60 sits in the same junior alpine category but carries Lange's narrower, more race-derived fit, so it suits a slimmer foot and a young skier chasing gates. Both use ISO 5355 alpine soles and junior alpine bindings.

Shop Lange RSJ 60 boots

Common Questions

Who should buy the Rossignol Comp J3 Kids Ski Boot?
The Rossignol Comp J3 suits progressing junior skiers who need a warm, forgiving 40-flex resort boot for lessons and all-day lift skiing. It fits average-to-wider kid feet and pairs with junior alpine bindings. It is an entry-level resort boot, not a touring or race boot.
Is the Rossignol Comp J3 a touring boot?
No. The Comp J3 is a junior alpine resort boot with a fixed cuff, no walk mode, and no tech (pin) inserts. It cannot be used with pin-tech touring bindings. It is built for lift-served resort skiing on junior alpine bindings.
What flex is the Rossignol Comp J3, and is it really soft?
Rossignol rates the Comp J3 at a 40 flex, and we agree it is genuinely soft. That softness is the point: a progressing child needs to flex the cuff to learn balanced, carved turns. A stiff boot would hold a young skier upright and slow their progress.
What bindings work with the Rossignol Comp J3?
The Comp J3 ships with an ISO 5355 junior alpine sole, so it works with junior alpine bindings set up for that sole. It has no tech inserts, so it is not compatible with pin-tech touring bindings. Rossignol offers GripWalk soles separately; if you fit those, use GripWalk- or MNC-compatible bindings and have a technician confirm the setup.
How does the Rossignol Comp J3 sizing run?
The Comp J3 fits as a roomy junior boot on a 98mm last with a wide toe box. We shell-fit for a small amount of growth room rather than converting from shoe size, and we confirm heel hold with the buckles closed. Sizes run 18.5 to 22.5 Mondopoint.
Can I heat-mold the Rossignol Comp J3 liner?
No. The Comp J3 uses a Comfort Fit liner built for warmth and cushioning, not a heat-moldable performance liner. Fit the boot around the stock liner, and size for a season of growth since kids' feet change quickly.
Does the Rossignol Comp J3 have a walk mode?
No. The Comp J3 has a fixed cuff and no walk mode. It is a resort boot, so it walks like any alpine boot. If you want a walk mode for touring or hiking, the Comp J3 is not the right boot.
How much does the Rossignol Comp J3 weigh?
Rossignol lists the Comp J3 at 930 grams per boot at size 20.5. That light weight makes the boot easier for kids to walk in and control on skis. Weight scales up and down with the size run.
Is the Rossignol Comp J3 warm enough for cold days?
The Comp J3 uses a Comfort Fit liner made from soft, warm materials, and the welded, close-to-foot Junior Cellular Design shell adds insulation. For very cold days, warm socks and dry liners matter more than the boot itself, so pack spares for ski school.

Our Verdict

The Rossignol Comp J3 Kids Ski Boot is a sensible, warm, forgiving resort boot for progressing juniors. At 930 grams per boot with a soft 40 flex, a wide 98mm junior last, three micro-adjustable buckles, and a warm Comfort Fit liner, the Comp J3 is easy for kids to control and comfortable enough to keep them on the hill. It is a fixed-cuff alpine boot with an ISO 5355 sole for junior alpine bindings, not a touring boot. Size it for a season of growth, and step up to the stiffer Comp J4 once a young skier starts driving through this soft flex.