Mountain Hardwear Ghost Whisperer: Infrared Review
Tested at 32°F | IR Photography Included
The Mountain Hardwear Ghost Whisperer shown side-by-side in infrared (left) and visible light (right)
Introduction
In the world of ultralight down jackets, few names stand out like the Mountain Hardwear Ghost Whisperer (formerly named the Ghost Whisperer/2). Renowned for its sub-8-ounce weight and high-quality down fill, this jacket has become a staple for backpackers, climbers, and anyone looking to cut ounces without sacrificing too much warmth.
To put the Ghost Whisperer to the test, we combined a classic field evaluation at around 32°F with infrared (IR) photography to visualize exactly how well this jacket insulates in cooler conditions. Below, you’ll see real IR images that highlight both the jacket’s strengths and the inevitable compromises of an ultralight design.
Quick Take
Cons: Sewn-through baffles allow heat to escape at seams Not as wind-resistant, Premium price point
Pros: Ultra-lightweight (sub-8 oz), Excellent warmth-to-weight ratio, Highly compressible, Versatile hood design
Bottom Line
The Mountain Hardwear Ghost Whisperer continues to impress as one of the lightest down jackets on the market. Our infrared (IR) images reveal the typical “striping” from sewn-through baffles but also confirm this jacket does a great job retaining heat where it matters most. If minimal weight and high packability are your top priorities, the Ghost Whisperer is tough to beat.
Testing Methodology
- Ambient Conditions: We tested in a controlled environment at around 32°F (0°C). The subject wore a lightweight synthetic base layer beneath the Ghost Whisperer.
- Activities: Basic movement, raising arms, and stationary poses were used to assess how heat distribution changed during mild activity and rest.
- IR Photography: Using an infrared camera, we captured surface temperature readings. Warmer (yellow/orange) areas indicate more heat escaping, while cooler (purple/blue) areas show better insulation.
Warmth & Insulation
High-Quality Down: The Ghost Whisperer uses 800-fill (or higher) down, which translates to an impressive warmth-to-weight ratio. In our testing at 32°F, it provided sufficient warmth during moderate activity.
Thermal Bridging: Like many ultralight jackets, it has sewn-through baffles, meaning the insulation is stitched directly through from the outer shell to the inner lining. This construction reduces weight but can create “heat stripes” where the stitching compresses the down.
Field Takeaway: If you’re moving around (hiking or climbing), the Ghost Whisperer keeps you comfortably warm around freezing temps. For extended stationary use (e.g., belaying in sub-freezing conditions), you might want an additional layer or a jacket with fewer thermal bridges.
Weight & Packability
Featherlight Build: Tipping the scales around 8 oz (or even less in some versions), the Ghost Whisperer is among the lightest full-featured down jackets available.
Compressibility: It packs into its own pocket, making it easy to stuff into a backpack or clip to a harness. Despite the thin shell fabric, the down lofts quickly when unpacked.
Field Takeaway: If pack space is at a premium—such as on alpine climbs or long backpacking trips—the Ghost Whisperer’s tiny packed size is a major selling point.
IR Photo Analysis
Note on Infrared Brightness
In infrared images, bright (yellow/orange) areas represent higher relative surface temperatures compared to their surroundings. This doesn’t necessarily mean these spots are “hot” to the touch or that they feel noticeably warmer. IR cameras measure emitted infrared radiation, so a bright region is simply emitting more IR than nearby areas—it’s all about relative differences, not an absolute measure of comfort or actual heat levels.
Analysis:
- Bright Baffle Lines: In every shot, you’ll notice bright (warm) horizontal stripes where the baffles are sewn, indicating areas of thermal bridging.
- Underarm and Side Hot Spots: The underarm region often appears bright due to higher body heat and minimal insulation at the seam.
- Zipper Column: The zipper is a consistent bright line, reflecting limited down behind the zipper tape.
- Overall Loft Performance: The center of each baffle shows cooler (darker) surface temps, indicating effective heat retention in those areas.
Why It Matters: These IR visuals give a clear sense of how ultralight down jackets balance warmth and weight. The Ghost Whisperer excels in its puffy baffles but naturally has more heat loss at stitched seams—an expected trade-off in this category.
Fit & Comfort
Athletic Cut: The Ghost Whisperer’s trim fit is comfortable for most body types without excessive bulk. If you plan on heavy layering, consider sizing up.
Hood Design: The hood is well-shaped, fitting snugly without restricting peripheral vision. However, it also features stitched baffles, so you’ll see the same bright stripes in IR images around the head.
Mobility: Raglan-style sleeves and a slight stretch in the shell fabric help maintain range of motion, important for climbing or reaching overhead.
Durability & Weather Resistance
Shell Fabric: Made from a lightweight ripstop nylon, the Ghost Whisperer is surprisingly durable for its weight. Still, it won’t withstand abrasive rock scrapes as well as heavier fabrics.
DWR Finish: The jacket has a water-repellent treatment that sheds light rain or snow. However, prolonged exposure to moisture can compromise down loft, so carrying a waterproof shell is wise in wet climates.
Pros & Cons
Pros
- Exceptional Weight Savings
- Great Warmth-to-Weight
- Highly Packable
- Functional Hood
Cons
- Thermal Bridging at Seams
- Less Ideal in High Wind
- Price (Premium)
Who Should Buy the Ghost Whisperer?
- Backpackers & Thru-Hikers: For multi-day trips, every ounce counts. The Ghost Whisperer’s balance of warmth and negligible weight is a major asset.
- Climbers & Mountaineers: Easy to stash in a pack or clip to a harness, providing a quick warmth boost during rest stops or belays.
- Everyday Cold-Weather Users: If you’re commuting or casually hiking in 30–40°F temps, this jacket is cozy and stylish. Just remember it’s built for lightness first.
Final Verdict
The Mountain Hardwear Ghost Whisperer remains a top contender in the ultralight down jacket arena. Our IR imaging at 32°F confirmed the jacket’s stellar insulation in the baffles, alongside predictable heat loss at the stitched seams and zipper. Despite these “hot stripes,” the Ghost Whisperer still delivers an impressive warmth-to-weight ratio that’s hard to match.
If you prioritize minimal weight, packability, and reliable warmth for three-season use—or as a layering piece in colder conditions—this jacket is well worth the investment. For those needing maximum warmth in sub-zero environments or who can’t tolerate any cold spots, a heavier, fully baffled jacket might be more suitable.
Overall, the Ghost Whisperer lives up to its reputation: incredibly light, surprisingly warm, and backed by IR evidence of its efficient (if imperfect) insulation design.
Have Questions?
Drop them in the comments below! And if you’ve used the Ghost Whisperer in real-world conditions, share your experience. We’d love to see how it performs for others—especially in different climates and activity levels.
Disclaimer: This review is not sponsored by Mountain Hardwear. All observations and opinions are our own, based on personal testing and infrared photography.