Robens HeatCore 3.8R Regular Sleeping Mat

Three-season insulation in a lightweight regular-size mat

The Robens HeatCore 3.8R Regular is designed for three-season backpacking and camping, combining double foil insulation with a compact 183 x 53cm format. Its R-value of 3.8 provides useful warmth while keeping the packed size and carried weight low.

A greater number of smaller air chambers improves support and stability across the 7cm depth. The Robens Peak Valve uses one-way technology and high airflow to simplify inflation and deflation.

New Heights lists the mat at 380g; the official Robens specification lists 385g, which is the shipping weight used in this CSV. A lightweight pump sack and carry bag are included, and the construction is PFAS-free.

Why You'll Love It

• R-value 3.8 for three-season use

• Double foil insulation

• Lightweight regular-size format

• 7cm supportive depth

• Smaller air chambers improve stability

• High-flow Robens Peak Valve

• Pump sack and carry bag included

• PFAS-free construction

Specifications

• Dimensions: 183 x 53 x 7cm

• R-value: 3.8

• Quoted temperature limit: -9°C

• Insulation: 2 foil layers

• Packed size: 23 x 8cm

• Shipping weight used: 385g

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

• Colour: Blue

What's Included

• Robens HeatCore 3.8R Regular mat

• Lightweight pump sack

• Carry bag

Perfect For

• Three-season backpacking

• Spring-to-autumn camping

• Lightweight touring

• Mountain huts and bothies

• Compact sleep systems

Balanced Warmth for Three-Season Trips

The regular-size HeatCore 3.8R provides a practical blend of insulation, support and packability for campers who need more warmth than an uninsulated mat without moving to a winter-weight design.