Sea to Summit Pursuit Self Inflating Mat – Long Rectangular Wide

Jump to: Our Verdict / Features / Specifications

For side sleepers looking to balance comfort and packability, the Sea to Summit Pursuit Self-Inflating Mat offers a well-considered design that accommodates a range of sleeping positions.

Sea to Summit says: 

Designed for backpackers / adventurers who prioritise weight/ packed volume but who prefer simple SI construction over more complex air sleeping pads. The Pursuit is available in Contour or Rectangular shapes

Our Verdict

Weighing 990g, it’s impressively light for a self-inflating mat of this thickness. It uses Horizontal Delta Coring to remove 40% of the foam, creating supportive air-filled channels that reduce weight and bulk without sacrificing comfort. The rectangular shape provides more room to sprawl—something I appreciate as a restless sleeper .

The XPEL Valve System makes inflating and deflating refreshingly straightforward. Its flip-over design stops air from sneaking back during deflation, so packing up is less of a battle. While it doesn’t pack down as tightly as the most compact ultralight air mats, I’ve been impressed by how small it compresses for a self-inflating mat of this type.

– Reviewed by Ultralight Outdoor Gear

Features

• Horizontal Delta Coring reduces weight and packed volume and creates a supportive, incredibly comfortable foam/air structure for a great night’s sleep
• Horizontal Delta Coring Removes 40% of the foam to reduce weight/packed size. Creates super-comfortable foam-supported air suspension channels
• Patented valve allows for simple inflation, then flips over to become a one-way deflate valve. Rolling and packing our Self-Inflating mats is an absolute breeze

Specifications

• Weight: 990g
• Dimensions: 198 x 76cm
• Thickness: 5cm | 2in
• R-Value: 3.0

Material & Construction

• SHELL AND LINING FABRICIS 100% RCS CERTIFIED RECYCLED POLYESTER
• solution-dyed, RCS-certifie recycled, bluesign-approved

ASTM R-Value:

From 2020, there is a new industry standard for measuring the R-value (level of insulation) of sleeping mats – ASTM F3340-18. This new standard is the sleeping mat equivalent to the EN rating for sleeping bags.

You can now directly compare the R-value of mats rated using the ASTM F3340-18 with confidence that is a fair and accurate comparison between mats. In simple terms, the higher the R-value, the warmer the mat.

In general terms, an R-value below 2.0 is for summer use, 2.0 to 4.0 is for cooler 3 season use and 4.0+ is for winter temperatures. This will be also be dependent on your sleeping bag, how cold you sleep etc. Please contact our customer service team if you need advice on choosing the right mat for your activity.

Help & advice:

• The Ultimate Guide to Choosing an Ultralight Sleeping Mat
• Time-Saver Guide to Choosing a Sleeping Mat
• Sea to Summit Sleeping Mat Guide
• About Sea to Summit
• R-Value Explained