Ski and snowboard back protector: which one to choose?
The short answer. For on-piste skiing or riding, a well-fitted, flexible back protector vest certified to EN 1621-2, worn under your jacket, is sufficient in most cases. If you go off-piste, choose a model with a RECCO reflector. If you jump in a snowpark or ski fast, upgrade to a full vest that also protects the shoulders and elbows. And for a child, the rule is the same as for a helmet: as soon as possible, in their current size.
A back protector reduces the risk of injury during a fall or impact. It does not eliminate it: the helmet remains the priority, and controlled riding remains the best protection.
Hard shell or soft protection: what’s the difference
There are two main families of back protectors.
- Hard shells (hard plastic, often articulated) distribute the impact over a large surface. They are effective but stiff: you can feel them on the chairlift and they follow back movements less effectively.
- Soft protectors (technical foams) contour to the body and go unnoticed. The best ones stiffen at the moment of impact.
This is the case with D3O, used on all PROSURF protectors. At rest, it is as soft as modeling clay. Upon impact, its molecules lock together in less than 10 milliseconds, absorbing and dispersing energy, before the material returns to its flexible state. You maintain the freedom of movement of a garment with the protection of a plate. To learn more: All about D3O.
Whether hard or soft, what ultimately counts is the standard: it measures the same thing regardless of the material.
Standards: what they really guarantee
EN 1621-2: the standard for back protectors. In the laboratory, a weight is dropped onto the protector, and the force that passes through is measured. The less force it lets through, the better it protects. The standard provides two levels: level 1 (average transmitted force of 18 kN maximum) and level 2 (9 kN maximum, thus more protective). A back protector without this standard has not proven much.
EN 1621-3: the standard for chest protectors. It primarily measures the ability to distribute the impact. Some PROSURF vests are certified to both EN 1621-2 and EN 1621-3 level 1.
Their limits. These tests measure a direct impact at a given speed. They say nothing about twisting, a very high-speed fall, or an impact against a tree. A certified back protector reduces the violence of the impact on the spine; it does not make you invulnerable.
Buying tip: check that the standard is written on the product label, along with its year.
Belt, vest, full-body, base layer: the 5 PROSURF models
| Model | Protected areas | Key features | Standards | Price |
|---|---|---|---|---|
| Back protector | Back | D3O plates, velcro belt, breathable mesh | EN 1621-2:2012 | €85 |
| Back protector vest | Back | Zipped, worn like a vest, available in child sizes | EN 1621-2:2014, EN 1621-3:2018 lev. 1 | €105 (child €95) |
| Ultra-light RECCO back vest | Back | The lightest, D3O Viper Air plate, RECCO reflector, unisex | EN 1621-2:2014 | €109 |
| D3O protection base layer | Back and shoulders | Seamless under-layer, breathable, regulates heat | EN 1621-2:2014, EN 1621-3:2018 lev. 1 | €89 |
| Full-body back vest | Back, shoulders, elbows | Most comprehensive protection, velcro on arms | EN 1621-2, EN 1621-3:2018 lev. 1 | €155 |
All have flat seams and soft linings: they can be worn all day without chafing.
Which one for your riding style
On-piste, recreational. The back protector vest is the most versatile: zipped, discreet under a jacket, certified for back and chest. If you want minimum thickness, the D3O base layer is worn as a first layer and also protects the shoulders.
Off-piste and freeride. Choose the ultra-light vest: it is lightweight for long days and integrates a RECCO reflector, which allows rescue teams to more easily locate someone buried or lost. Note: RECCO does not replace the avalanche transceiver (DVA), shovel, and probe trio. It is an extra chance of being found, not avalanche equipment.
Snowpark, jumps, fast skiing. Falls are more violent here and often involve the shoulders and elbows. The full-body vest covers these three areas in one piece.
Beginner snowboarder. The back is not the area that takes the most impact: it is mainly the buttocks, coccyx, wrists, and knees. If your budget is limited, start with D3O shorts and wrist guards, then add a back protector.
Child. The back protector vest is available from child XXS to S (from about 4 years old, at €95). Children fall often, and they won't complain about a vest they don't feel.
Choosing your size and wearing it properly
A back protector that is too large moves at the moment of impact and provides poor protection. Three rules:
- Measure, don't guess. Take your chest measurement (or height in cm for a child) and compare it to the chart on the product page.
- If between two sizes, take the smaller one, as long as it doesn't hinder breathing. The plate must remain centered on the spine, from the top of the back to the lower back.
- For a child, their current size. Not a size "to grow into": a vest that is too big will slip.
Wear the protector over your base layer and under your jacket. Fasten the zip or velcro, raise your arms, lean over: it should not ride up or twist.
FAQ
Is a back protector useful if I only ski on-piste?
Yes. Collisions and backward falls also happen on-piste, often caused by another skier. A flexible vest can be worn without discomfort, so there is no reason to go without one.
Can you wear a back protector under a normal ski jacket?
Yes. PROSURF models are slim and are worn between the first layer and the jacket. The D3O base layer even replaces your first layer.
Should you replace your back protector after a big fall?
D3O returns to its flexible state after every impact and remains effective. However, if the plate is torn, cracked, or deformed, replace the protection.
How do you maintain a D3O protector?
Follow the care label on the product. Let it air dry after your day, away from a radiator.
Delivery in 24-48 hours in France and 48-72 hours in Europe, free for orders over €150. PROSURF, a French brand for ski and snowboard protection since 2001.