Big Agnes Divide Sleeping Mat – Long Wide

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A tough, lightweight back-country mat, perfect for warm weather adventures.

Big Agnes says: 

A light and compact warm-weather pad with a smooth and stable sleeping surface of vertical baffles, made using sustainably-sourced materials. All the comfort that comes with a Big Agnes air chamber sleeping pad, at an incredible value!

Our Verdict

Big Agnes’s Divide  Sleeping Mat is an incredibly comfortable mat that works really well for side sleepers; the 8cm mat keeps you off the ground and well cushioned. The two outer baffles are oversized and help you stay on the mat at night, which is especially good for restless sleepers.

The mat is rectangular, which I prefer over mats that taper at the feet; I always find that my legs have slipped off during the night on narrower mats, especially if I’m using a quilt. A rectangular mat will add some weight, but I’ll happily carry a few more grams for a good night’s sleep.  

The mat isn’t made from super ultra-light materials but from more durable ripstop nylon; again, I would rather have a robust, slightly heavier mat that I know I can be a little less careful with.

The bonded heat reflective film doesn’t make any noise as you toss and turn, so you (and anyone camping near) will not be disturbed as you toss and turn during the evening.

Big Agnes’s Divide Sleeping mat is my go-to this year for its price, warmth-to-weight ratio, and durability.

– Reviewed by Ultralight Outdoor Gear

Features

• A light and compact warm-weather pad with a smooth and stable sleeping surface of vertical baffles at an incredible price
• Built-in advanced heat reflective technology
• Antimicrobial treatment inside the pad prevents microorganism growth
• Proprietary minimalist I-Beam construction reduces weight and provides consistent stability and comfort
• Larger outer chambers keep you comfortably cradled in the middle of the pad
• When sleeping on frozen ground or snow we recommend adding a closed cell foam pad
• 3M repair patches included
• Pad Inflation Sack included
• Individually inflated and tested ensuring 100% dependability
• Quieter materials than other pads on the market

Specifications

• Weight: 730g (excludes storage bag)
• Dimensions: 20″ x 77″ / 51 x 183 cm
• Thickness: Outer 3.5″ / 9cm, Inner 3.25″ / 8cm
• Packed size: 4″ x 7″ / 10 x 18cm
• ASTM R-Value: 1.4
• Shape: Rectangular

Material & Construction

• 70D recycled nylon ripstop fabric
• Aviation-grade TPU lamination technology provides ultimate weld strength and durability
• Dual function, dual port Valve

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
• About Big Agnes
• Big Agnes Sleeping Mats Buying Guide
• R-Value Explained