Gennye XT Insulated Air Sleeping Pad - Rectangular
Best Use
Backpacking, Thru-Hiking, Bikepacking
R value
3.9
Performance
3 Season
Packed Size
3.5x3.5x9.1in | 9x9x23cm
Packed Weight
15.2oz | 430g
Shipping & Returns
FEATURES
- TWO R-VALUES, ASTM-TESTED
- RIBCORE™ SPREADS YOUR WEIGHT END TO END
- 13.9 OZ, PACKS TO 3.5 × 8.3 IN
- CROZZVALVE™: INFLATE, DEFLATE, FINE-TUNE
- 2–3 CYCLE INFLATION
- TAPERED MUMMY OR FULL-WIDTH RECTANGULAR
DESIGN DETAILS
TECH SPECS
BEST USE
R6.5 — Cold-Weather Backpacking
R9.5 — Winter & Alpine Backpacking
CAPACITY
1 Person
PERFORMANCE
R-Value 6.5 · 9.5 (ASTM F3340)
CONSTRUCTION
Insulated Air · Internal Rib Structure
| Season | R-value | Suggested Using Temp | Extreme Operating Temp |
|---|---|---|---|
| Warm Weather | R1–2 | >50°F | >10°C | >36°F | >2°C |
| Three Season | R3–4 | 32–50°F | 0–10°C | 18–36°F | −6 to 2°C |
| All Season | R5–7 | 3–25°F | −16 to −4°C | −8 to 10°F | −22 to −12°C |
| Extreme Cold | R8+ | −13 to 3°F | −25 to −16°C | −31°F and below | −35°C |
An ASTM R-value is a lab number. It makes pads comparable to each other. It doesn't predict your night — that depends on your bag, the ground, humidity, and how you sleep.
| Mummy Regular | Rectangular Regular | Rectangular Large | |
|---|---|---|---|
| R-value | 6.5 · 9.5 | ||
| Thickness | 3.5 in | ||
| Min Weight | 13.9 · 15.0 oz | 16.2 · 17.3 oz | 20.2 · 21.4 oz |
| Packed Size | 3.5×8.3 · 3.7×8.3 in | 3.7×8.3 · 3.9×9.4 in | 3.5×10.2 · 3.7×10.2 in |
| Fits Up To | 5'9" | Above 5'9" | |
| Mummy Regular | Rectangular Regular | Rectangular Large | |
|---|---|---|---|
| R-value | 6.5 · 9.5 | ||
| Thickness | 9 cm | ||
| Min Weight | 395 · 425 g | 460 · 490 g | 573 · 606 g |
| Packed Size | 3.5×8.3 · 3.7×8.3 in | 3.7×8.3 · 3.9×9.4 in | 3.5×10.2 · 3.7×10.2 in |
| Fits Up To | 175 cm | Above 175 cm | |
All weights are minimum weight — pad only. Stuff sack, inflation bag, straps, and repair kit are additional.
Regular fits up to 5'9" | 175cm. Large fits above that. Mummy is Regular only — if you're taller than 5'9" and want the fish taper, there's no option for you right now.
IN THE BOX
FAQS
Each tier maps to an ASTM-tested temperature band: R3.9 for above 23°F (-5°C), R6 for 23°F to -4°F (-5°C to -20°C), R8.8 for -8°F (-22°C) and below. If your trips regularly span two bands, size up.
Flat Mylar layers compress under body weight, collapsing the air gap that provides insulation at the highest-pressure contact points. HexCore™ three-dimensional honeycomb cells hold Mylar in discrete volumes — the cellular structure resists compression independently, maintaining thermal geometry where it matters most: directly under the torso and hips.
Fish-profile (21.7 in / 55 cm shoulder, 13.8 in / 35 cm foot) is the lighter option and pairs with mummy sleeping bag geometry. Rectangular variants — including a 76.8×51.2 in (195×130 cm) Double — suit users who move during sleep or share the pad. Weight difference is approximately 6–9 oz depending on size.
Yes. All GENNYE PRO configurations use CrozzValve™ — two-stage, mechanically independent inflate and deflate ports — and include the same dual-function pump sack.
Yes. Fish-profile follows the same logic as a mummy bag: full shoulder width where the body is widest, tapering toward the foot where contact surface narrows. GENNYE is 21.7 in (55 cm) at the shoulder and 13.8 in (35 cm) at the foot. The taper removes material that carries no body weight, reducing pack weight without reducing the insulated surface under your body. Users who move frequently during sleep, or who use a rectangular sleeping bag, should consider the GENNYE PRO in rectangular configuration.
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