The Robens Iceshield 55 is an anatomically shaped sleeping mat that self inflates (SIM) to height of 5.5cms offering campers a cushion against the ground below for an improved night's sleep under the stars. The anatomical shape ensures there are no cold spots on the sleeping mat, and also gives campers a product that is lightweight; and benefits from a small pack size for ease of storage and transportation within your camping rucksack.