Pure Heat. The Hawx line of boots is one of alpines best selling boots. But the hawx has a 100mm last, and sometimes is too roomy for narrower feet. So the Burner was born. Great flex,great fit, and a 98mm last. Perfect for the narrow foot. But this season an added bonus to this model. Live fit along the sides, which make the boot even more accommodating in the forefoot. The 90 flex is solid for an intermediate to light advanced skier. Be sure to check em out today.