Rab Ultrasphere 4.5 Sleeping Mat - Regular

What is the Ultrasphere 4.5 Sleeping Mat?

The Ultrasphere 4.5 is a featherlight sleeping mat built for fast-paced adventures when both warmth and low weight are essential. Highly comfortable and packable, its innovative TILT technology offers a fantastic warmth-to-weight ratio for mountain running, bikepacking, fastpacking and trekking.

What is it made of?

The outer comprises 20D recycled polyester, which is super light yet durable enough to endure lots of use with a lesser impact on the planet. The material is coated with a TPU coating, and a fluorocarbon-free DWR (durable water repellent) that helps any light rain or coffee spills simply bead away instead of soaking in. Fluorocarbon-free DWR's are much healthier for the environment than conventional treatments, as they do not use harsh per-fluorinated chemicals.

The inner is lined with Rab's innovative TILT technology (TILT meaning Thermo Ionic Lining Technology). This technology is a heat reflective fabric treatment that reduces radiant heat loss, whilst adding next to nothing in terms of weight, pack size and breathability, offering optimum performance without compromise. This TILT layer is positioned as closely to the body as possible for maximum efficiency, making a significant heat saving that can be extremely valuable, even life-saving, in freezing conditions.

What are its features?

A tapered mummy shape helps to save weight and bulk, and in total, the mat is roughly 8cm thick once inflated. Its innovative design features two layers of heat-reflective TILT, which reduces radiant heat loss. Offset air chambers disrupt the flow of convection currents, helping to trap warm air inside the baffles, allowing you to get a restful night's sleep without the need for high-volume insulation. The top fabric is lightweight and soft, adding to the overall comfort level of the mat and reducing the amount your sleeping bag will slip and slide around as you fidget.

A pump sack is included, which helps speed up the inflation process in a more hygienic way. These pump sacks are designed to minimise moist air getting inside your mat as you blow it up, which can cause it to rot from the inside after heavy use and decrease the product's longevity. You blow a small amount of dry air into the bag, roll it and push the air through. It sounds like a long process, but it's surprisingly quick and easy! The process is made even easier with the low profile, two-way valve that eliminates the chance of air escaping as you pump it up yet allows fast deflation when needed.

A repair kit is included for emergencies, alongside a roll-away stuffsack for storing the mat.

Features

• 20D Recycled Polyester outer fabric with internal TPU Coating and fluorocarbon free DWR
• 2 layers of TILT reflective film help reduce radiant heat loss without adding weight or bulk
• Offset weight saving internal cut outs help disrupt the flow of convection currents and keep warm air static
• R-Value: 4.3
• Thickness: 8cm
• Tapered mummy shape to save weight
• Low profile two-way valve for easy inflation and deflation
• Pump sack included for rapid and hygienic inflation
• Roll-away stuff sack with repair kit included