DOES MY WAIST LOOK FAT IN THIS?
A ski’s waist width directly correlates to the condition that you will mostly be skiing in. Skis with skinnier waists are quicker edge to edge, better for on trail carving and easier to maneuver for a new or beginner skier. The wider the ski is underfoot, the more float you get in the powder and the more stability you get in the crud and broken snow. The more time you spend off-trail, the wider your skis should be.
< 85mm
Skis under 85mm are best suited for skiers that will be spending just about all of their time on the groomed trails or firm or icy snow pack. This waist width can range from beginner all the way up to expert and everything in-between. High-powered carving skis for experts usually have a waist width around 80-85mm which makes the ski very agile, yet wide enough to go through the crud that pops up on the groomers. Skis for beginners are in this waist width that will make them lighter and easier to control while learning at lower speeds.
85mm - 95mm
Skis 85-95mm are primarily used for on-trail skiing but have the ability to spend time off the groomers in good snow conditions or springs snow. They have maneuverability on and off the trail and versatility so you can spend time in the powder, as long as its not waist deep...
96mm - 110mm
Skis 96-110mm are the ideal all mountain waist width for skiers seeking true versatility. They make medium to long radius turns on the groomers with ease and have the ability to float in all but the absolute deepest of powder (and we hope you get those days). They can be a bit slower from edge to edge in firmer conditions
111mm +
111+mm waist widths are best for spending as much of your time as possible in the ungroomed terrain. Ultra wide waist widths provide you with the most floatation in the deep powder and the most stability when things get cruddy or bumpy. This ski will generally have a lot more rocker in the tip and tail.
They are not the most agile ski for making short quick turns on the groomers but are easily manageable for making your way back to the lifts for another lap.
COMMON SKI SHAPES

WHAT THE HECK IS ROCKER?
Rocker is the slight bend up or reverse camber shape that lifts off of the ground when the ski is laying flat on the ground.
Rocker makes the ski more maneuverable by engaging the tip of the ski into a turn quicker and easier. It also helps you float to the top of the snow Having your skis on top of the snow makes it much easier for you to keep up speed, suffer less fatigue and have more fun.
Rocker also absorbs vibrations that can be caused by bumps or crud. Think of a traditionally cambered ski as a loaded spring - when you hit the variations in the snow, the cambered tip will send those vibrations through the ski, back through the binding, past the boots and to your body. A rockered ski will absorb those vibrations rather than sending them to your body.
Some form of rocker exists in almost every type of ski, no matter what the intended use is.
It is recommend when sizing your ski that you increase 5-7cm for a ski that has tip rocker/camber and up to 10cm for skis that have rocker/camber/rocker or fully rockered skis. Rocker gives you more maneuverability and the extra length improves your stability.
Common Ski Rocker Profiles


Cambered skis have the most traditional shape with the center of the ski raised when the ski is laying flat on the ground un-weighted. They provide the most edge hold, stability and rebound for on-trail skiing and for racing.
Tip Rocker/Camber skis have rockered tip with camber for the rest of the ski. Rocker initiates a turn faster while the camber provides stability. Most all mountain skis have this type of rocker profile.
Rocker/Camber/Rocker skis have rocker in the tips and tails. Rockered tips initiate turns quicker and float better in soft snow. Camber underfoot provides stability and edge grip.
Rocker in the tail releases the ski from turns easier for developing skiers and provides better maneuverability off the trail. This combination is the most versatile for on and off trail skiing.
Full Rocker skis have a U shape to them with the base of the ski flat on the ground while the tips and tails rise up. Fully rockered skis have the best floatation are most used in the deep powder and have a playful feel. Some all mountain skis are starting to use this shape for versatility.