Cold-Weather Certified. Ultralight Engineered. Sleep Anywhere.
The ATEPA CoreX 5 delivers serious winter-grade insulation in a featherlight package. With an R-Value of 5 and a weight of just 600g (1.32 lbs) , it's engineered for backpackers and adventurers who demand reliable warmth without the bulk. Rated down to -4°F (-20°C) , this pad keeps you comfortable on snow, frozen ground, and chilly alpine campsites—while packing smaller than a water bottle.
Key Features:
✅ R-VALUE 5 – TRUE 4-SEASON INSULATION
Certified to R-Value 5 with 7-layer thermal core technology. Heat-reflective films and multi-chamber construction trap warmth and block ground cold. Sleep warm in conditions from summer nights to deep winter.
✅ ULTRALIGHT AT JUST 600G (1.32 LBS)
One of the lightest high-R-value pads available. Shed pack weight without sacrificing warmth. Ideal for thru-hikers, alpine climbers, and ultralight purists.
✅ 3.54" THICKNESS – ROCK-PROOF COMFORT
9cm of loft fully elevates you from rough terrain. No more feeling roots or rocks. The horizontal tensioning system provides stable, body-mapped support that prevents sagging and keeps you comfortable all night.
✅ INTEGRATED PUMP SACK – NO LUNG POWER NEEDED
The included storage bag doubles as a dry inflation system. Just roll to inflate—no moisture inside, no lightheadedness. The dual-layer valve delivers one-way inflation and rapid deflate in seconds.
✅ COMPRESSES TO 9" X 4.3"
Rolls down smaller than a 1L bottle. Fits easily in any backpack.
✅ DURABLE & TRAIL-READY
20D Nylon TPU construction is puncture-resistant and waterproof. Complete repair kit included for quick field fixes.
Specifications:
-
R-Value: 5
-
Inflated Size: 71.6" L x 24.4" W x 3.54" H (182 x 62 x 9 cm)
-
Packed Size: 9" x 4.3" x 4.3" (23 x 11 x 11 cm)
-
Weight: 1.32 lbs (600g)
-
Materials: 20D Nylon TPU + Multi-Layer Reflective Insulation
-
Valve: 2-in-1 Dual-Layer
-
Included: Pad, Pump Sack, Repair Kit, Compression Straps
Perfect For:
-
Winter camping & alpine expeditions
-
Thru-hiking & ultralight backpacking
-
Cold-weather 4-season trips
-
Anyone needing reliable warmth without weight
Light enough to carry. Warm enough to trust. The CoreX 5 is your cold-weather essential.
🛒 Add to Cart – Sleep Warm, Go Further
Compare Sleeping Pads
Find the perfect sleeping pad for your next adventure
| Features | ||||||
|---|---|---|---|---|---|---|
| R-Value | 3 | 6 | 4.4 | 6.6 | 5 | 3 |
| Dimensions | 74.8" L × 24.4" W × 2.4" H | 72" L × 24.4" W × 3.54" H | 72" L × 21.26" W × 3.15" H | 77.6" L × 25.6" W × 3.94" H | 77.6" L × 25.6" W × 3.94" H | 77.6" L × 25.6" W × 3.94" H |
| Pad Thickness (in.) | 2.4 in | 3.54 in | 3.15 in | 3.94 in | 3.94 in | 3.94 in |
| Packed Size | 11" x Φ5" | 9" x Φ4.3" | 7.87" x Φ3.94" | 10.24" x Φ4.72" | 10.24" x Φ4.72" | 10.24" x Φ4.72" |
| Weight | 1.54 lbs / 700g | 1.54 lbs / 700g | 0.9 lbs / 410g | 1.65 lbs / 750g | 1.65 lbs / 750g | 1.61 lbs / 730g |
| Capacity | 1 Person | 1 Person | 1 Person | 1 Person | 1 Person | 1 Person |
| Key Features | High R-Value | High R-Value | High R-Value | High R-Value | High R-Value | High R-Value |
| Shell Material | TPU material: Free of PVC, BPA and phthalates | TPU material: Free of PVC, BPA and phthalates | TPU material: Free of PVC, BPA and phthalates | TPU material: Free of PVC, BPA and phthalates | TPU material: Free of PVC, BPA and phthalates | TPU material: Free of PVC, BPA and phthalates |
| Valve Type | TPU Safety Air Valve | 2-in-1 Valve*1 | 2-in-1 Valve*1 | 2-in-1 Valve*1 | 2-in-1 Valve*1 | 2-in-1 Valve*1 |
| Material | 20D Aluminum-coated Ripstop Nylon Fabric | 20D Nylon | 20D Nylon | 20D Nylon | 20D Nylon | 20D Nylon |
| Internal Structure | 5‑Layer Warmth System – Silver heat reflector + I‑Beam support + EcoMade insulation. | 7-Layer Thermal Lock System: Aluminum-coated film (3 layers) + tensioning | Filling: Aluminum film (3 layers) + vertical tube reinforcement | Filling: Aluminum film (3 layers) + vertical tube reinforcement | Filling: Aluminum film (2 layers) + vertical tube reinforcement | Filling: Aluminum film (1 layers) + vertical tube reinforcement |
| Internal Baffles | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Side Walls | — | — | — | ✓ | ✓ | ✓ |
| Outer Bag | Standard Stuff Sack | 2-in-1 Stuff Sack & Pump Sack | 2-in-1 Stuff Sack & Pump Sack | 2-in-1 Stuff Sack & Pump Sack | 2-in-1 Stuff Sack & Pump Sack | 2-in-1 Stuff Sack & Pump Sack |
Extra 50% Off – Grab Yours!
