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Register your productThe Mountain Twin Junior is a versatile directional twin made for young riders who want to shred anywhere and everywhere with confidence. Its friendly flex makes it easy to turn, while the CamRock profile keeps the tips playful and floaty. The Mountain Twin Junior is the perfect board for all-mountain cruising, terrain park trickin', and levelling up your riding on every lap.
Medium flex for balanced and intuitive board feel
Directional twin shape for all-mountain versatility
CamRock profile for balance of grip, float and pop
A snowboard's outline defines many of its characteristics, from how it turns or floats in powder to its performance riding switch. Shape affects everything from the width and taper of the nose and tail, to the position of the stance relative to the board's center.
[Shape]
Twin-inspired shape with subtle directional tuning. A slightly longer nose improves float and handling in variable terrain when riding forwards, without limiting its switch performance. The go-to shape for all-mountain riders who want the best of both worlds.
[Pr0file]
Versatile all-mountain profile featuring camber between the bindings with equal amounts of rocker in the nose and tail. Camber delivers pop and precise edge control, while the rocker adds forgiveness, smoother turn initiation and better float in soft snow.
[Tracti0n_tech]
Subtle yet effective Low Traction Tech featuring three equal bumps (front binding, board center, back binding) for added edge grip and control.
Inspired by the rounded bottom contours of surfboards, 3D Contour Bases are designed to make every run smoother and every turn more effortless by reducing the drag of the board tips. 3D Contour Bases enhance glide and improve float, helping you ride faster and with better flow. Learn more
[3d_pr0file]
Subtle yet effective 3D Contour Base featuring 2mm of spoon bevel in the nose and 0-2mm of spoon bevel in the tail. Spoon bevel starts just before the contact points.
When riding flat, the spoon bevel on the edges is not engaged, but it does help smoothly deflect snow away from the nose of the board.
As you begin to make a turn, the spoon bevel helps you smoothly roll the board on to your egde with less friction and edge drag.
In the middle of a turn, camber and Traction Tech keep you locked onto your egde in the center of the board while the spoon bevel reduces the "plow effect" of your nose and tail edges.
100% of our adult models feature high-end materials, construction technologies and responsible manufacturing processes. We accept no compromises in producing the most durable and responsibly produced snowboarding gear. Learn more by checking out our Materials Library
All Jones snowboards come factory de-tuned at the tip and tail so they’re ready to shred straight out of the shop.
Forever Flex stabilizes a snowboard’s flex and rocker profile for its lifetime. Boards are overbuilt, then ‘broken in’ using a process that mimics 20 days of riding and makes the flex more consistent from day one.
Dual density wood core made out of responsibly harvested Paulownia and Poplar. 1:1 Paulownia to Poplar stringer ratio creates a lightweight core that’s poppy and durable.
Biaxial fiberglass laminate made with a dual-layer, dual-directional construction that delivers a forgiving yet snappy board feel with a mid-soft torsional flex and quick energy transfer.
Durable and scratch resistant premium topsheet engineered to endure rigorous daily use in extreme conditions.
Premium extruded base material that is fast, durable, easy to repair, and offers consistent performance with minimal maintenance
All Jones snowboards come factory waxed with WEND natural wax so they’re ready to shred straight out of the shop.
A bio-based epoxy made with 27% plant-based carbon that reduces CO₂ emissions by 33% compared to conventional petroleum-based epoxy. Sourced from plant-based industrial by-products, its unmatched bonding properties deliver industry leading durability and performance.
Recycled ABS sidewalls with a rounded finish that are engineered to enhance durability by reducing topsheet chipping and impact damage.
Bombproof steel edges made from recycled German steel, engineered for maximum strength and long-lasting durability.
Pro sizing tip: To decide between the two sizes, choose the shorter board for a more playful ride with quicker turns and greater maneuverability, or the longer board for added stability, control, and float.
Choose your ideal board size range using your body weight and boot size.
Not sure which size will suit you best? Use our
| Board size (cm) | 120 | 125 | 130 | 135 | 140 | 145 |
|---|---|---|---|---|---|---|
| Weight range (lbs/kg) | 65-85 lbs. / 29-39 kg. | 70-90 lbs. / 31-42 kg. | 75-100 lbs. / 34-45 kg. | 80-110 lbs. / 36-50 kg. | 90-120 lbs. / 41-54 kg. | 100-140 lbs. / 45-64 kg. |
| Ideal boot size (US / EU) | US 2-4.5 / EU 33-36 | US 2-4.5 / EU 34-36 | US 3.5-5 / EU 35-37 | US 4-6 / EU 35.5-38 | US 5-7 / EU 37-39.5 | US 5-7 / EU 37-39.5 |
| Big Horn Series* | ||||||
| Board waist width (cm) | 22.8 | 23.1 | 23.4 | 23.7 | 24.0 | 24.3 |
| Bindings recommended size |
*If you wear US Men's 11.5 or bigger, look for our Big Horn Series boards with minimum waist width 26.3 cm.
| Board size (cm) | 120 | 125 | 130 | 135 | 140 | 145 |
|---|---|---|---|---|---|---|
| Board weight | 1,6kg / 3,5lbs | 1,7kg / 3,7lbs | 1,8kg / 4lbs | 1,9kg / 4,2lbs | 2,1kg / 4,6lbs | 2,3kg / 5,1lbs |
| Surface area (dm2) | 28.09 | 29.75 | 31.44 | 33.17 | 34.94 | 36.74 |
| Contact length (cm) | 80.0 | 84.7 | 89.4 | 94.1 | 98.8 | 103.5 |
| Effective edge length (cm) | 86 | 91 | 95 | 100 | 105 | 110 |
| Tip length (cm) | 20.3 | 20.4 | 20.6 | 20.7 | 20.9 | 21.0 |
| Tail length (cm) | 19.8 | 19.9 | 20.1 | 20.2 | 20.4 | 20.5 |
| Waist width (cm) | 22.8 | 23.1 | 23.4 | 23.7 | 24.0 | 24.3 |
| Underfoot width - front foot (cm) | 23.5 | 23.8 | 24.2 | 24.5 | 24.8 | 25.2 |
| Underfoot width - back foot (cm) | 23.6 | 24.0 | 24.3 | 24.6 | 25.0 | 25.3 |
| Tip width (cm) | 25.8 | 26.3 | 26.8 | 27.3 | 27.8 | 28.2 |
| Tail width (cm) | 25.8 | 26.3 | 26.8 | 27.3 | 27.8 | 28.2 |
| Sidecut radius (m) | 5.5 | 5.8 | 6.1 | 6.4 | 6.7 | 7.0 |
| Taper (mm) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Reference stance (cm/in) | 42.0 / 16.5 | 44.0 / 17.3 | 46.0 / 18.1 | 48.0 / 18.9 | 50.0 / 19.7 | 52.0 / 20.5 |
| Centered stance (cm/in) | 40 / 15.7 | 42 / 16.5 | 44 / 17.3 | 46 / 18.1 | 48 / 18.9 | 50 / 19.7 |
| Insert pack | ||||||
| Stance setback (cm) | 1 | 1 | 1 | 1 | 1 | 1 |
Pro sizing tip: To decide between the two sizes, choose the shorter board for a more playful ride with quicker turns and greater maneuverability, or the longer board for added stability, control, and float.
Choose your ideal board size range using your body weight and boot size.
Not sure which size will suit you best? Use our
| Board size (cm) | 120 | 125 | 130 | 135 | 140 | 145 |
|---|---|---|---|---|---|---|
| Weight range (lbs/kg) | 65-85 lbs. / 29-39 kg. | 70-90 lbs. / 31-42 kg. | 75-100 lbs. / 34-45 kg. | 80-110 lbs. / 36-50 kg. | 90-120 lbs. / 41-54 kg. | 100-140 lbs. / 45-64 kg. |
| Ideal boot size (US / EU) | US 2-4.5 / EU 33-36 | US 2-4.5 / EU 34-36 | US 3.5-5 / EU 35-37 | US 4-6 / EU 35.5-38 | US 5-7 / EU 37-39.5 | US 5-7 / EU 37-39.5 |
| Big Horn Series* | ||||||
| Board waist width (cm) | 22.8 | 23.1 | 23.4 | 23.7 | 24.0 | 24.3 |
| Bindings recommended size |
*If you wear US Men's 11.5 or bigger, look for our Big Horn Series boards with minimum waist width 26.3 cm.
Not sure which size will suit you best? We can put you in the right ballpark if you give us your boot size and weight. If you’d really like to dial in your board choice, contact our Gear Gurus here.
| Board size (cm) | 120 | 125 | 130 | 135 | 140 | 145 |
|---|---|---|---|---|---|---|
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Versatile · Comfortable · Responsive
All-mountain · Versatile · Playful
All-conditions freeride · Versatile · Stable & floaty
Resort · Easy-to-turn · Fun & playful
