Robens LightCore UL 3.1R Sleeping Mat - Ultralight 3-Season Mat

The Robens LightCore UL 3.1R Sleeping Mat is an ISPO Award-winning ultralight inflatable mat: 310g, an R-value of 3.1 and 8cm of cushioning for three-season backpacking. Choose Standard (183 x 53cm) or Large (191 x 61cm).

The warmth comes from a single foil lining that reflects heat back to you, giving a rating of approximately -4°C for spring, summer and autumn trips. Horizontal baffles contour to your body for a stable night, and the soft-touch 15D ripstop nylon is comfortable against skin yet tough enough for repeated use. The Robens Peak Valve (one-way, high airflow) makes inflation quick, and the included pump sack lets you fill the mat without blowing moisture into the insulation.

Pick the LightCore UL when pack weight and volume are the deciding factors: packed, the Standard is just 21 x 8cm.

Why you'll love it

• Ultralight – 310g
• Warm for its weight – foil insulation, R-value 3.1, approx. -4°C
• 8cm thick – proper cushioning and support from horizontal baffles
• Quick to inflate – Peak Valve plus a hygienic pump sack
• Tiny pack size – 21 x 8cm (23 x 10cm Large)
• Award-winning – ISPO Award winner for innovation and performance

Good to know

• Dimensions: 183 x 53 x 8cm (Standard); 191 x 61 x 8cm (Large)
• Fabric: 15D 430T ripstop nylon with TPU coating; single-layer foil insulation
• PFAS-free – manufactured without intentionally added PFAS
• Included: sleeping mat, lightweight pump sack and carry bag

Who it's for

Backpackers, thru-hikers, bikepackers, fastpackers and wild campers counting grams on three-season trips, and a solid choice for adventure racing, trekking and lightweight travel.