NNN, Turnamic, and SNS (Fit Guide)
When choosing boots for cross-country skiing or roller skiing, it’s important to understand which binding system they are compatible with. The most common systems are NNN, Turnamic, and the older SNS.
Here we explain the differences and how to choose the right boot.
NNN – The Most Common Standard
NNN (New Nordic Norm) is currently the most common binding standard for cross-country skiing.
The system is used by many manufacturers, including:
- Rottefella
- Fischer
- Alpina
- Madshus
- Rossignol
An NNN boot features:
- a metal bar in the forefoot
- two longitudinal guide grooves in the sole
The binding has corresponding grooves that stabilize the boot.
Advantages
- very stable system
- wide range of boots
- compatible across many brands
NNN is currently used for both cross-country skis and roller skis.
Turnamic – NNN without Screws
Turnamic is a more modern binding system based on the NNN standard.
It was developed by Fischer and Rossignol and uses a mounting plate instead of screws.
This means the binding can be:
- moved forward or backward
- adjusted without tools
Important to Know
Turnamic bindings still use NNN-compatible boots.
This means that a boot that works with NNN also works with Turnamic.
SNS – An Older System
SNS (Salomon Nordic System) was developed by Salomon and was previously used by many skiers.
SNS boots have:
- a metal bar in the forefoot
- a wide guide rail in the middle
This differs from NNN, which uses two narrower grooves.
Important
SNS and NNN are not compatible.
This means that:
- SNS boots only work with SNS bindings
- NNN boots only work with NNN / Turnamic
SNS is less commonly used today as most manufacturers have switched to NNN.
Fit Guide – How Boots Should Fit
A good fit is crucial for both comfort and control.
Boots should fit snugly but not tightly.
Consider this
Toe Room
Toes should have a little room to move, especially for classic skiing.
Heel Grip
The heel should sit securely without lifting when you push off.
Foot Width
Different brands suit different foot shapes.
Generally:
- Alpina – slightly wider fit
- Fischer – more athletic fit
- Salomon – often a regular fit
Boots for Roller Skis
For roller skis, most people use regular cross-country ski boots.
The difference is that roller skiing often takes place on hard surfaces and in warmer temperatures, which means many appreciate:
- good ventilation
- stable ankle
- durable sole
Bindings for roller skis are usually NNN-compatible.
Summary
| System | Compatibility | Status |
|---|---|---|
| NNN | NNN / Turnamic | Standard today |
| Turnamic | NNN boots | Modern variant |
| SNS | SNS only | Older system |
For most skiers, NNN is the obvious choice as it offers the widest range of boots and bindings.