Whereas some manufacturers are simply beginning to use Muscovy down in insulated merchandise, Zenbivy has been doing it for years. However the model claims its newest rollouts take the ability of Muscovy fill even additional. Going into 2026, Zenbivy will provide two new ultralight Muscovy applied sciences, which it says characterize “the way forward for Muscovy Down.”
Muscovy down, for these unfamiliar, is a sort of insulation derived from the Muscovy duck. Muscovy plumes are uniquely “clingy,” in order that they clump and maintain collectively very effectively. It has a quick compression restoration price, could be very gentle, and doesn’t shift round as simply as goose down.
Zenbivy’s EXPEDry Muscovy 900FP launched within the fall of 2025. It’s the first Muscovy with EXPEDry expertise, which infuses the down with gold particles to reinforce water resistance. Then, in early 2026, Zenbivy will launch its Ultrasonic Muscovy 950FP, which undergoes an ultrasonic washing method to assist struggle odor.
Each of those insulation applied sciences shall be obtainable within the model’s Ultralight Clip Beds this yr, which embrace an ultralight sheet, quilt, and, as of Jan. 1, 2026, an ultralight insulated pillow. For those who’re out there for an ultralight sleep system with techy down fill, this new providing from Zenbivy may pique your curiosity.
Zenbivy Muscovy Applied sciences: What’s New?
EXPEDry Muscovy 900FP
Lengthy-distance hikers and ultralight backpackers who often discover themselves in humid environments will recognize the water resistant properties of this insulation. EXPEDry is a expertise from ALLIED Feather+Down. It’s a course of that infuses down clusters with gold nanoparticles, which break up water’s molecular bonds, making the down ultrahydrophobic whereas rising evaporation.
GearJunkie has beforehand reviewed merchandise that make the most of this expertise. Our expertise with EXPEDry has usually been superb. It maintains its loft in humid, moist, and even outright drenched situations and dries shortly. And since the gold particles are completely embedded within the down, it doesn’t put on out like some coatings.
That is the primary time a model has used EXPEDry with Muscovy down. When mixed, these two applied sciences might present an exceptionally resilient sleeping bag to be used in moist and humid climate.
Moreover, Zenbivy claims that the EXPEDry Muscovy is each ultralight and ultrapackable. You’ll be able to already buy Ultralight Clip Beds with EXPEDry Muscovy 900FP on Zenbivy’s web site now.
Ultrasonic Muscovy 950FP
Zenbivy is launching its Ultrasonic Muscovy 950FP in early 2026. It claims the beds made with this fill are its lightest ever.
The Ultrasonic Muscovy insulation is a good possibility for critical ultralight backpackers in search of most heat on the lowest doable weight. With Ultrasonic Muscovy, Zenbivy claims its 25-degree bag is 0.5 ounces lighter, and its 10-degree bag is greater than 2 ounces lighter than its commonplace insulation. For true gram counters, that isn’t insignificant weight financial savings.
The Ultrasonic a part of this expertise has to do with the way it’s washed. Zenbivy makes use of an “ultrasonic washing method” that supposedly exceeds business requirements for cleanliness, making this particular sort of duck down cleaner and “just about odor-free.” The model additionally claims this particular washing course of makes use of 20% much less water and vitality than conventional strategies, making it a extra eco-friendly different as effectively.
BONUS: Zenbivy’s First Ultralight Artificial Beds
For those who can’t use down resulting from allergy symptoms or sensitivities, or gained’t use it for private or moral causes, Zenbivy can nonetheless cater to your ultralight wants. Alongside the EXPEDry and Ultrasonic Muscovy, in early 2026, the model may even provide its Ultralight Beds in an artificial insulation possibility for the primary time.
The model used PrimaLoft Gold insulation, which makes use of extraordinarily fantastic artificial fibers to create loft and entice warmth. Supposedly, PrimaLoft Gold can obtain the identical stage of heat as commonplace artificial insulations at an excellent decrease weight.
That is additionally essentially the most environmentally pleasant insulation possibility on Zenbivy’s menu. It claims that the artificial insulation is made solely from recycled waste, that the creation course of requires 50% much less carbon emissions, and that on the finish of its life, it has the potential to be recycled. For eco-minded customers, it is a nice possibility.
