ISPO Award Winner: The LightCore UL 3.1R Regular sleeping mat from Robens

Weighing just 295 grams, the LightCore UL 3.1R sleeping mat by Robens delivers unbeatable warmth, support, and packability—proof that lightweight comfort no longer comes with compromise. 

When it comes to ultralight adventures, every gram matters—but so does a good night’s sleep. The new Robens LightCore UL 3.1R sleeping mat is designed for those who demand high performance and minimal weight. With an advanced foil-insulated core and an adaptive horizontal baffle design, this mat seamlessly integrates with the Robens Scoria Quilt UL. Designed for two- to three-season use, it keeps adventurers comfortable and supported, ready for whatever comes next. 

At the heart of the LightCore UL 3.1R lies its innovative single-layer aluminum foil insulation, engineered to reflect body heat and boost thermal efficiency without adding unnecessary bulk or weight. With an R-value of 3.1, this mat provides dependable warmth across multiple seasons, making it ideal for spring, summer, and autumn trekking. 

Weighing in at just 295 grams, it’s one of the lightest insulated mats in its class—proof that ultralight doesn’t have to mean uncomfortable. The eight centimeters thick construction ensures a soft, supportive base for a restful night’s sleep, even on uneven terrain. The horizontal baffle structure adapts naturally to the body’s contours, distributing weight evenly and providing a stable, quiet and firm surface throughout the night. 

The surface material - a 15D 430T TPU-coated ripstop nylon - offers the perfect blend of strength and softness. It’s tearproof, water-resistant, and quick drying, with a silky touch that feels comfortable against the skin. Dimples and cut-outs within the internal structure help maintaining stability and down loft even after countless nights in the wild. 

Inflating and deflating the mat is effortless thanks to Robens’ Peak Valve technology, which provides one-way inflation and high airflow. Paired with the UL pump sack, setup takes seconds - no struggling, no wasted breath.

What sets the LightCore UL 3.1R apart is its integration with the Robens Scoria Quilt UL. Together, they create a complete sleep system that’s efficient, intuitive, and perfectly balanced. The quilt attaches directly to the mat, forming a sealed unit that eliminates cold spots and prevents slippage during the night. The result is a more stable, insulated, and comfortable sleep. 

Beyond its smart design, the LightCore UL 3.1R is PFAS-free and available in a Regular and Large size. It comes in a bright orange colorway and is the perfect companion for thru-hikes, alpine treks, bikepacking adventures, and any ultralight journey where weight and comfort must coexist. 

The LightCore UL 3.1R Regular sleeping mat is part of the new Robens Ultralight Collection.

• Ultra lightweight construction with only 295 grams 
• Horizontal baffle design makes the mat adapt well to the body and gives firm support 
• Integrated sleep system with the Robens Scoria Quilt UL