Highlander Nap-Pak Arctic R11 Inflatable Sleeping Mat

The Highlander Nap-Pak Arctic R11 is a four-season inflatable sleeping mat built for cold-weather camping, winter expeditions and backpacking where ground insulation matters most. Its independently tested R-value of 11 (ASTM F3340) places it well above typical winter mats, which generally sit in the R6 to R8 range, and gives genuine year-round capability in a mat that weighs 900g and packs to 28 x 14cm.

A three-layer aluminium foil system delivers the exceptional warmth-to-weight ratio, while 10cm air-cell baffles distribute body weight evenly across the mat for a supported, comfortable sleeping surface. The shell is 20D ripstop nylon and the dual-layer TPU valve allows straightforward inflation, fine adjustment and rapid deflation. For those who want the same R11 insulation in a lighter, mummy-shaped format, see the Nap-Pak Arctic R11 Mummy Lite.

Key Features

• R-Value of 11, ASTM F3340 Tested - Independently verified four-season insulation, well above the R6-R8 range of typical winter mats
• Three-Layer Aluminium Foil Insulation - Maximises warmth-to-weight performance across the full mat
• 10cm Air-Cell Baffle Construction - Distributes weight evenly for a comfortable, supported sleeping surface
• 20D Ripstop Nylon Shell - Lightweight yet durable construction for regular outdoor use
• Dual-Layer TPU Valve - Fast inflation, easy firmness adjustment and quick deflation
• 900g Without Stuff Sack - Strong warmth-to-weight ratio for a four-season mat
• Packs to 28 x 14cm - Compact enough for backpacking and multi-day trips
• Stuff Sack Included - Keeps the mat protected and contained when packed

Ideal For

• Winter and Cold-Weather Camping - R11 insulation handles frozen ground and snow conditions as part of an appropriate sleep system
• Military and Field Use - R11 insulation and compact pack size suit cold-weather deployments and field camps where ground insulation is critical
• Four-Season Backpacking - Compact and light enough for multi-day trips across all seasons
• Expeditions and Extended Field Use - Dependable ground insulation for sustained use in demanding environments
• Year-Round Outdoor Adventures - High R-value removes the need to switch between seasonal mats

Technical Specifications

Warranty

This product is covered by Highlander's 282 Year Guarantee.

Warranty Exclusions

This warranty does not cover damage caused by normal wear and tear, misuse, accidents, modifications, or failure to follow care instructions.