The EZ Sleeper is an ultralight closed cell foam mat for boosting the warmth of your winter sleep system or shaving down your summer pack weight. Highlights Boosts the warmth of your other mats for winter camping Insulating IXPE foam reduces heat loss to cold ground Folding design takes up less space for easy packing Winter Booster Half the weight and packed size of other folding foam mats, the EZ Sleeper is primarily designed for using as a winter booster mat. Weighing just 240g, you can use it with your inflatable or self-inflating mat to extend your current camping set-up into the colder months. Ultralight Design At half the weight of most inflatable sleeping mats, the EZ Sleeper can also be used as a fast and light summer mat. Its ideal for ultralight backpacking, mountain marathons or bikepacking races where low pack weight is essential. The folding concertina design also takes up less space, making it easier to pack. Space Age Insulation You can lose up to 3x more heat to cold ground than cold air. The EZ Sleepers closed cell foam is highly insulating, reducing heat loss by conduction. The egg box design traps pockets of still, warm air for additional insulation. And the top of the mat has an aluminium film coating to reduce heat loss by radiation. Virtually Indestructible Foam mats are reassuringly reliable, providing puncture-proof warmth and comfort – and protection for your air-filled mat. Weve used IXPE (Irradiation Cross-Linked Polyethylene) foam too. This cross-linked foam has more bonds between the molecules for extra durability.