Is the Supertech M10 ECE certified?

Yes. This version is ECE certified, so it is road-legal in many markets. Check your local rules before buying.

Is it a street or off-road helmet?

It is an off-road helmet built for motocross and enduro. It has no street visor, so you would wear goggles with it.

This listing is size medium. Owners say it fits true to size, so order your usual helmet size unless you are between sizes.

It is at the upper end of the helmet's recent range. Four stores list it new, so compare them before buying.

It is sold as a helmet. Goggles and other accessories are usually separate, so confirm the box contents with the store.

At Atoamotos, for $729.01, as of our latest check.

4 stores we checked sell it, including Atoamotos, Walmart, eBay, Amazon.

$729.01at AtoamotosObserved at 12:35 PM

Compared across 4 stores. Prices are checked against each store and labelled with when.

It checks today's price at every store, compares the alternatives and answers in about a minute.