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Atepa

ATEPA CoreX 5 Insulated Sleeping Pad | R-Value 5, Ultralight Backpacking Mat with Pump Sack, 3.54" Thick for 4-Season Camping

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

R-value 5

Insulation for 4-season use and

Weighs 600g

(1.32 lbs) for an ultralight

3.54-inch Thickness

Elevated sleeping comfort

Includes Integrated

Pump sack for inflation without

Compresses 9"

X 4.3" x 4.3" for

$84.99
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SKU: atepa-corex-5-insulated-sleeping-pad-r-value-5-ultralight-backpa

Overview

Built for cold nights in the backcountry, this insulated sleeping pad is aimed at hunters, backpackers, and alpine campers who need dependable warmth without carrying unnecessary bulk. Its R-Value 5 construction, 3.54-inch thickness, and 600g weight make it a practical option for 4-season trips where pack space and insulation both matter. The included pump sack and dual-layer valve simplify inflation and deflation, while the compact packed size helps it fit easily into a hunting pack or backpack. It is a focused cold-weather sleep system, with a repair kit included for trail-side fixes when conditions are less than ideal.

Why Hunters Choose the Atepa

R-value 5

True four-season insulation for cold-weather

Weighs Just

600g, keeping pack weight low

3.54-inch Thickness

Adds substantial loft over rough

Integrated Pump

Sack supports easy inflation without

Packs Down

To 9 x 4.3 x

Key Features

  • R-Value 5 insulation for 4-season use and cold-weather camping
  • Weighs 600g (1.32 lbs) for an ultralight carry
  • 3.54-inch thickness provides elevated sleeping comfort
  • Includes an integrated pump sack for inflation without lung power
  • Compresses to 9" x 4.3" x 4.3" for compact packing
  • Includes a repair kit and compression straps

Best Used For

  • Winter campers needing insulated ground protection on snow, frozen ground, or alpine sites
  • Ultralight backpackers prioritizing lower pack weight without giving up cold-weather warmth
  • Thru-hikers wanting a compact sleeping pad that packs smaller than a water bottle
  • Backcountry travelers who prefer pump-sack inflation instead of blowing into the pad
  • Campers needing a thicker pad for added comfort over rough terrain and roots

Specifications

Compression Straps IncludedYes
IncludedPad, Pump Sack, Repair Kit, Compression Straps
Inflated Size71.6" L x 24.4" W x 3.54" H (182 x 62 x 9 cm)
Materials20D Nylon TPU + Multi-Layer Reflective Insulation
Packed Size9" x 4.3" x 4.3" (23 x 11 x 11 cm)
Pump Sack IncludedYes
R Value5
Repair Kit IncludedYes
Temperature Rating-4°F (-20°C)
Thickness3.54"
Valve2-in-1 Dual-Layer
Weight1.32 lbs (600g)

Pros

  • R-Value 5 provides true four-season insulation for cold-weather trips.
  • Weighs just 600g, keeping pack weight low for backpacking.
  • 3.54-inch thickness adds substantial loft over rough ground.
  • Integrated pump sack supports easy inflation without lung power.
  • Packs down to 9 x 4.3 x 4.3 inches for compact storage.
  • Includes a repair kit and compression straps for trip-ready packing.

Considerations & Trade-offs

  • The pad is built around warmth and insulation, so it prioritizes cold-weather use over minimal summer-only simplicity.
  • At 600g, it is light for a high-R-value pad, but it is still a dedicated insulated sleep system rather than an ultralight minimalist mat.
  • The 3.54" thickness adds comfort and ground clearance, though it also creates a larger inflated profile than thinner pads.
  • The included pump sack and dual-layer valve reduce effort at camp, but they add a few extra pieces to manage in the field.

Suggested Comparisons

  • Winter sleeping pads
  • Ultralight backpacking sleeping pads
  • Self-inflating or inflatable sleeping pads
  • Cold-weather camping pads

Suggested Accessories

  • Sleeping pad stuff sack
  • Repair kit
  • Compression straps
  • Inflation bag

Frequently Asked Questions

Is the ATEPA CoreX 5 suitable for cold-weather or winter camping?

Yes. The product is described as cold-weather certified, rated to R-Value 5, and rated down to -4°F (-20°C). It is presented for 4-season use, including winter camping and alpine expeditions.

What comes included with the sleeping pad?

The included items listed are the pad, pump sack, repair kit, and compression straps.

How is the pad inflated?

It includes an integrated pump sack that doubles as a dry inflation system. The description says you roll to inflate, and the dual-layer valve is designed for one-way inflation and rapid deflation.

What are the packed and inflated dimensions?

The listed inflated size is 71.6" L x 24.4" W x 3.54" H (182 x 62 x 9 cm). The packed size is 9" x 4.3" x 4.3" (23 x 11 x 11 cm).

What materials are specified for the pad?

The specifications list 20D Nylon TPU with multi-layer reflective insulation. No other material details are provided in the source data.