Ski terms, in plain English
Every word you'll meet on a spec sheet, in a review or at the shop counter: what it means, and what it changes about how a ski feels. Start with the two drawings; most of the rest follows from them.
The parts of a ski
55 terms shown
Size and shape
The numbers on every spec sheet, and what each one changes.
- LengthAlso: ski size, ski length
How long the ski is from tip to tail, in centimetres.
Shorter skis turn easily and forgive mistakes; longer skis are steadier at speed and float better in powder. Beginners ride skis about chin height, experts around the top of the head or a little over.
- Waist widthAlso: underfoot, width
How wide the ski is under your boot, in millimetres. The most important number for where a ski works best.
Narrow (under about 85 mm) is quick and grippy on groomed runs. Mid (85 to 104 mm) is the do-everything range. Wide (105 mm and up) floats in powder but is slower to tip on edge.
- Tip / waist / tailAlso: dimensions, sidecut dimensions
Three widths, in millimetres: the widest point near the front, the narrowest point underfoot, and the widest point near the back. Written like 133 / 98 / 120.
The middle number is the waist width. The gap between the ends and the middle makes the hourglass shape that lets a ski turn.
- Sidecut
The hourglass curve along a ski's edge: wide at the ends, narrow in the middle.
Tip a ski on its edge and that curve makes it carve an arc. More sidecut (a deeper curve) means tighter turns.
- Turn radiusAlso: sidecut radius, radius
The size of the circle a ski naturally carves when tipped on edge, in metres.
Under about 15 m feels quick and eager to turn (slalom style). 16 to 20 m is an all-round middle. Over 20 m wants long, fast arcs. Radius changes with length: the longer version of the same ski has a longer radius.
- Taper
How much narrower the tail is than the tip.
More taper makes a ski release from a turn and pivot more easily, which helps in trees and soft snow. Less taper holds on to the end of a carved turn.
- Tip and tailAlso: shovel
The front end (tip, or shovel) and back end (tail) of the ski.
- Effective edge
The length of metal edge that actually touches the snow when you turn.
Rocker lifts the ends off the snow and shortens the effective edge, which is why a heavily rockered ski feels shorter than its length and is usually bought a few centimetres longer.
- Twin tip
A ski whose tail is turned up like its tip, so you can ski and land backwards.
Rocker, camber, rocker. Tip and tail both rise early for easier pivoting, with camber underfoot for grip. The dots mark where the edge contacts the snow. Illustration of the profile type, with heights exaggerated. Standard on park skis and common on playful all-mountain and powder skis. A flat tail, the opposite, finishes turns with more power.
Rocker and camber
How a ski curves when you look at it from the side.
- Camber
The slight upward arch in the middle of a ski when it lies flat on the ground.
Full camber. The ski arches up underfoot along almost its whole length. Maximum grip and pop on firm snow. The dots mark where the edge contacts the snow. Illustration of the profile type, with heights exaggerated. Standing on the ski presses the arch flat and pushes the whole edge into the snow. That gives grip on hard snow and a springy feel out of turns.
- RockerAlso: early rise, reverse camber
Ends that curve up off the snow earlier than on a traditional ski, like the runners of a rocking chair.
Powder rocker. Deep rocker at both ends and little camber. Floats and smears in deep snow. The dots mark where the edge contacts the snow. Illustration of the profile type, with heights exaggerated. Rocker in the tip helps a ski start turns and float in soft snow. Rocker in the tail makes it easy to pivot and smear. The trade-off is less edge on hard snow.
- Rocker / camber / rockerAlso: all-mountain rocker, hybrid rocker
The most common modern profile: rocker at both ends for easy turning, camber in the middle for grip.
Rocker, camber, rocker. Tip and tail both rise early for easier pivoting, with camber underfoot for grip. The dots mark where the edge contacts the snow. Illustration of the profile type, with heights exaggerated. - Full camberAlso: traditional camber
Camber along nearly the whole ski, with almost no rocker. The profile of race and carving skis.
- Flat tail
A tail that stays on the snow instead of curving up.
It supports you at the end of a turn and gives a strong finish. Less forgiving if you lean back.
What's inside
The materials, and what they do to the ride.
- CoreAlso: wood core
The centre of the ski, almost always wood (poplar, beech, ash, paulownia and others).
Dense woods like beech and ash make a ski stronger and heavier; light woods like paulownia and poplar make it lighter and livelier. Cheaper beginner skis may use foam.
- MetalAlso: titanal, Ti, metal laminate
Thin sheets of aluminium alloy (the best-known brand is Titanal) layered into the ski.
Metal makes a ski damp, stable and grippy at speed, and also heavier and more demanding. Skis with "Ti" in the name usually have it. Lighter and beginner skis often skip it.
- CarbonAlso: carbon fibre
Carbon fibre layers that add stiffness and pop without much weight.
Common in touring and lightweight all-mountain skis. A carbon ski feels lively and energetic; it can also feel nervous in rough snow compared with a metal one.
- SidewallAlso: sandwich construction, cap construction
The strip of hard plastic along the side of the ski, above the metal edge.
Full sidewalls drive power straight to the edge for better grip. Cap construction, where the top sheet wraps over the side, is lighter and more forgiving and is common on beginner skis.
- BaseAlso: sintered base, extruded base
The plastic underside that slides on the snow.
Sintered bases are faster and hold wax better; extruded bases are cheaper and easier to repair. Either way, waxing a few times a season keeps skis gliding.
- Edges
The steel strips along both sides of the base that bite into the snow.
Sharp edges matter most on hard snow and ice. A shop tune sharpens them.
- Mount pointAlso: recommended line
Where on the ski the binding (and so your boot) sits.
Further back suits directional, charging skiing; closer to the middle balances the ski for spins and skiing backwards. A shop mounts bindings on the line the maker recommends unless you ask otherwise.
How a ski feels
The words reviews use, translated.
- FlexAlso: stiffness, stiff, soft
How easily the ski bends.
A soft ski bends at slow speeds and is easy to turn, which suits lighter and newer skiers. A stiff ski holds up at speed and under strong, heavy skiers, but takes effort to bend.
- DampAlso: dampness, lively
A damp ski soaks up vibration and feels calm and quiet on rough snow.
The opposite is lively or poppy: you feel more of the snow and get more spring out of each turn. Metal makes skis damp; carbon makes them lively.
- StableAlso: stability, chatter
Staying composed at speed instead of shaking (chattering) or getting knocked around.
Length, weight, stiffness and metal all add stability. The price is a ski that asks for more speed and effort.
- PlayfulAlso: surfy, loose, directional
Easy to pivot, slide sideways, pop off bumps and change direction on a whim.
Playful skis usually have plenty of rocker and a softer flex. The opposite is directional or charging: a ski that wants to point downhill and carve.
- Float
How well a ski stays on top of soft, deep snow instead of sinking.
Width and tip rocker create float. On a powder day it is the difference between gliding and wading.
- Edge gripAlso: edge hold
How firmly the edges hold when the snow is hard or icy.
Narrow waists, camber, metal and sharp edges all improve grip. It matters most in the East and on early-morning groomers.
- ForgivingAlso: demanding
A forgiving ski lets small mistakes go; a demanding ski punishes them.
Softer flex, rocker and shorter lengths make skis forgiving. Beginners and intermediates should look for it.
- Swing weight
How heavy the ski feels when you rotate it, as in a quick turn or a spin.
Light tips and tails lower the swing weight, which makes a ski feel nimble in trees and bumps.
Types of ski
The categories shops sort skis into.
- Carving skisAlso: frontside, piste skis
Narrow skis (about 66 to 84 mm) built for groomed runs.
Quick from edge to edge with strong grip. The right first ski if you only ski groomers.
- All-mountain skisAlso: all mountain, daily driver
Mid-width skis (about 84 to 104 mm) meant to handle most snow and most of the hill.
The category most people should start in. Narrower ones lean toward groomers, wider ones toward soft snow.
- Freeride skisAlso: big mountain
Wider, sturdier skis (about 100 to 112 mm) for ungroomed snow, steeps and chopped-up powder.
- Powder skis
The widest skis (about 112 mm and up), with lots of rocker, for deep fresh snow.
- Park skisAlso: freestyle skis
Twin-tip skis for jumps, rails and skiing backwards in the terrain park.
- Touring skisAlso: backcountry skis, alpine touring, AT
Lightweight skis for climbing uphill under your own power (with special bindings and skins) and skiing down.
- Women's skis
Usually the same shape as a unisex model, built lighter and a little softer, in shorter lengths.
Plenty of women ski unisex models and plenty of lighter men ski women's ones. On Skifolio each ski links to its twin.
Snow and terrain
Where you ski decides which ski you want.
- GroomerAlso: groomed run, piste, corduroy
A run smoothed overnight by a grooming machine. The ridged surface it leaves is called corduroy.
- Hardpack and iceAlso: firm snow, boilerplate
Snow packed so firm that edges struggle to bite. Common in the East and after a thaw and refreeze.
- Chop and crudAlso: tracked powder
Powder after other skiers have cut it up: soft piles and ruts. Heavier, damper skis plough through it best.
- PowderAlso: pow, fresh snow
Fresh, untracked snow. A few inches skis like a soft groomer; a foot or more needs width to float.
- BumpsAlso: moguls
Mounds that form on ungroomed runs as skiers turn in the same places. Quick, softer-tailed skis handle them best.
- TreesAlso: glades, tree skiing
Skiing between trees, where turns must be fast and tight. Skiers often pick a slightly shorter, more playful ski for it.
- Off-pisteAlso: sidecountry, backcountry
Anything not groomed. Inside the resort it is patrolled; beyond the boundary (backcountry) it is not, and needs avalanche training and gear.
Skier levels
What beginner, intermediate, advanced and expert mean here.
- Beginner
Learning to link turns on green and easy blue runs. On Skifolio: First turns, ability 1 to 3.
- Intermediate
Parallel turns on most blue runs and starting on blacks. On Skifolio: Cruising, ability 4 to 6.
- Advanced
Confident on black runs, bumps and trees. On Skifolio: Charging, ability 7 to 8.
- Expert
Skis anything on the mountain, at speed, in any snow. On Skifolio: ability 9 to 10.
- Green, blue, blackAlso: trail ratings, double black
North American trail signs: green circle is easiest, blue square is intermediate, black diamond is advanced, double black diamond is expert only.
Ratings compare runs within one resort, so a blue at a steep mountain can be harder than a black at a gentle one.
Buying and setup
Words you'll meet in the shop.
- QuiverAlso: one-ski quiver, quiver of one, daily driver
The set of skis one person owns. A one-ski quiver is a single ski chosen to do everything.
People with two or more skis pick each for different snow: for example a narrow one for firm days and a wide one for storms.
- Model yearAlso: season, 2027 skis
Skis are named for the winter they end in: a 2027 ski is sold for the 2026/27 season.
Many models carry over for several years with only new graphics, so last year's version on sale is often the same ski.
- BindingsAlso: system bindings, flat skis
The devices that hold your boots to the skis and release them in a fall.
Some skis are sold "flat" (no bindings, you choose a pair and a shop mounts them); others come with a matched "system" binding already fitted.
- DINAlso: release setting
The number that sets how much force it takes for a binding to release your boot.
It depends on your weight, height, age, boot and ability, and it must be set and tested by a certified technician. Skifolio never suggests a value.
- DemoAlso: demo skis, demo bindings
A high-end rental you can try before buying. Demo bindings adjust to fit different boots without remounting.
- Tune and wax
Shop service that sharpens the edges, flattens and repairs the base, and applies wax so the ski glides.
- Boot fittingAlso: bootfitter
Getting ski boots matched and shaped to your feet by a specialist. Most skiers should buy boots before skis.
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