Hilleberg Keron 4 GT is a tunnel tent designed to handle uncompromising expedition use. It is designed specifically for use on Arctic ski expeditions, which is, after all, the primary reason for choosing this tent. For example, the Scandinavian Outdoor Store-sponsored Finnish South Pole Expedition used the Keron. - Extremely durable, stable, spacious and comfortable tunnel tent - Two roomy vestibules and doors. One of the doors can always be placed away from the wind. - Sleeping compartment with high overhead clearance: max. interior height 110cm - Vents covered against snow and insects - Highly durable 10 mm aluminium poles Hilleberg doesn't use PFC's in any of their products.