Which ski jacket features are worth paying for

Seam sealing: the feature that decides whether you stay dry

Fabric almost never leaks first. Seams do, because a seam is a line of needle holes, and each hole is a route through the waterproof layer. Sealing means a tape bonded over the inside of that seam. There are three published states and the difference between them is real.

Critical seams are what most family-price outerwear publishes, including the Columbia and the Arctix in this ledger, and for a cold dry resort week it is genuinely fine. Where it stops being fine is wet snow, spring skiing, and children, who spend a lot of the day sitting in it. If your skiing is mostly a learning slope in March, fully taped is worth the premium.

The number brands avoid publishing

A hydrostatic head rating in millimeters is the closest thing outerwear has to a comparable specification, and the striking thing about this category is how few makers state one. In this ledger, Wantdo publishes 10,000 mm on its 3-in-1 jacket and names a microporous membrane. Arctix publishes 3,000 mm on its snow pants and nothing at all on its jacket. Columbia publishes a named waterproof-breathable fabric and no number.

An absent rating does not mean a bad jacket. It means you cannot compare that jacket numerically against one that publishes, and you are being asked to trust a brand name instead of a figure. The waterproof ratings page explains what the millimeter figure is measuring and which bands are useful for which weather. Read it before you pay for a number you did not need or skip a jacket for not having one.

Pit zips: the most useful feature per dollar

Zippered vents under the arms, opened on the way up and closed on the way down. They are the difference between a jacket that works on a cold February morning and one that works on both that and a sunny April afternoon, and they cost the maker very little.

They matter most for beginners, which is counterintuitive. A confident skier spends a lot of the day riding lifts and going downhill in cold air. A beginner spends the day sidestepping up a slope, carrying skis, picking a child up, and getting genuinely hot inside a jacket bought for standing still. Overheating and then cooling in wet base layers is the actual cause of most cold afternoons, and the base layer page covers the other half of the fix.

Powder skirt: yes if you fall, no if you do not

An elasticated band inside the hem that snaps closed around your waist and stops snow traveling up inside the jacket. It is described as a deep-snow feature, which undersells it: the people who most need one are beginners, because beginners fall, and every fall on a learning slope is an opportunity for snow to get in at the hem.

If you already own a jacket without one, a long hem and a base layer tucked into your pants achieves most of the same thing. The sizing page covers how long a hem needs to be. If you are buying and the choice is between a powder skirt and a slightly better waterproof rating, take the skirt for a first season.

The hood has to fit over a helmet

This is a feature rather than a given. A hood cut for a bare head will not close over a helmet, and the weather in which you want a hood is the weather in which you are wearing one. Look for a maker that says helmet-compatible; if it does not say, assume it is not, and test with the helmet on before you remove the tags.

Two secondary details are worth a glance. A hood that adjusts at the back as well as at the face will actually stay on in wind rather than blowing off the moment you turn your head. And a removable hood is a genuine convenience on a jacket you also wear off the mountain, which for a family is most of its life.

Three-in-one systems, and what they really give you

An interchange or 3-in-1 jacket is a waterproof shell with a zip-out insulated liner, so you have a shell, a liner and a combined jacket. Columbia publishes the Whirlibird V this way and Wantdo publishes a fleece-liner version. For a family that skis one week a year and spends the other fifty-one in a cold parking lot, this is genuinely two purchases avoided rather than a gimmick.

The catch is that neither half is quite as good as a dedicated one. The shell is heavier than a pure shell and the liner is less warm than a real insulated jacket, and the combined weight is more than either. Whether that trade is worth it depends entirely on whether the jacket has a life off the mountain. The 3-in-1 roundup compares the published constructions, and the shell versus insulated page argues the underlying question.

The features that are close to irrelevant

• A RECCO reflector. A passive reflector that lets a rescue team with a matching detector locate you. Genuinely useful in avalanche terrain and essentially never relevant on a groomed resort run. Do not pay extra for it; do not avoid a jacket that has it.
• A goggle wipe on a cord. A small piece of cloth. It is fine, and wiping the inside of a lens with anything is how the anti-fog treatment gets destroyed, which is the actual advice on the goggle care page.
• A media pocket with a headphone port. Solved by any pocket and a wireless earbud. It exists because the pattern was drawn in 2011.
• A ski pass pocket on the sleeve. Genuinely convenient at a resort with a gate reader, and worth roughly nothing anywhere else. Nice if it is there.

Pockets, briefly

Two things worth checking rather than counting. Whether there is an internal pocket big enough for a phone against your body, because a phone in an outer pocket dies in the cold. And whether the hand pockets sit above the waist belt of a backpack, which matters the moment anyone in the family carries one.

The order to spend money in

For a family skiing a handful of days a year, in order: seam sealing, then a helmet-compatible hood, then pit zips, then a powder skirt, then a published waterproof rating, then everything else. If a jacket has the first three and no published rating, it is a better buy than one with a big number on the tag and untaped seams.

And before spending at all, it is worth reading the rent-or-buy page on clothing. Outerwear is the one ski category where the purchase is easy to justify, because a jacket that works on the mountain also works for the school run in January, which no ski boot ever will.