Robens HeatCore 3.8R Large Sleeping Mat

Three-season warmth with extra width and stable support

The Robens HeatCore 3.8R Large adds extra width to a lightweight three-season sleeping system. At 191 x 61cm, it gives broader shoulder and hip room while retaining a compact packed size for touring and backpacking.

Double foil insulation provides an R-value of 3.8, with a quoted lower temperature limit of -9°C. Numerous smaller air chambers improve stability and support across the 7cm thickness without creating unnecessary bulk.

The high-flow Robens Peak Valve supports quick inflation and deflation. A lightweight pump sack and carry bag are included, and the PFAS-free mat weighs 460g.

Why You'll Love It

• R-value 3.8 for three-season use

• Double foil insulation

• Large 191 x 61cm sleeping area

• 7cm supportive depth

• Smaller air chambers improve stability

• High-flow Robens Peak Valve

• Pump sack and carry bag included

• PFAS-free construction

Specifications

• Dimensions: 191 x 61 x 7cm

• R-value: 3.8

• Quoted temperature limit: -9°C

• Insulation: 2 foil layers

• Packed size: 25 x 9cm

• Weight: 460g

• Material: 20D 380T ripstop nylon, TPU coated

• Colour: Blue

What's Included

• Robens HeatCore 3.8R Large mat

• Lightweight pump sack

• Carry bag

Perfect For

• Three-season camping

• Backpacking with extra sleeping width

• Spring-to-autumn touring

• Side sleepers

• Comfort-focused lightweight setups

More Room Without a Heavy Mattress

The HeatCore 3.8R Large offers a wider platform and useful three-season insulation while remaining light and compact enough for campers who still care about pack size.