Rab's ULTRASPHERE 4.5 LONG mattress is an essential accessory to take with you on multi-day adventures in the great outdoors where temperatures are low.

Ultralight, weighing just 505g, and ultra-compact, it slips discreetly into your rucksack or bikepacking bags. It offers excellent comfort during the night thanks to its 8 cm thickness and compartments that optimise the distribution of your weight. What's more, it incorporates two layers of TILT reflective film which boosts the R value to 4.3 for effective insulation and amplifies the warmth of your sleeping bag by limiting thermal bridges.

It's made from 20D recycled polyester and finished with a fluorocarbon-free DWR water-repellent treatment. Its streamlined shape adapts to your sleeping bag and saves a few grams.