Frequently Asked Questions

Keloflex™ is the heart of K3core systems, made from a soft, open-cell material that tackles what regular bedding and insulation often can't: managing moisture while keeping your temperature regulated.

Keloflex™ moves moisture and excess heat away from your body so that you stay dry and comfortable.

Keloflex™ moves moisture from warm to cold, and the greater the temperature difference, the faster it moves moisture. The colder it is outside your system, the faster it will dry itself.

No. Keloflex™ does not have a waterproof coating or plastic barrier. It is designed to manage moisture movement, not seal water in or out like a rain jacket or waterproof shell.

No. Keloflex™ does not rely on waterproof coatings to perform. Its performance stems from the material structure and composition.

Most insulation is focused mainly on trapping heat. Keloflex™ is designed to allow moisture and excess heat to escape, keeping you in the perfect zone. The goal is not just warmth; it is a more stable, drier sleep environment.

Keloflex™ is designed with both longevity and durability in mind.

Unlike materials that depend on fragile coatings, loose fill, or loft that can break down and lose effectiveness, Keloflex™ does not lose performance from repeated use, washing or extended compression.

Keloflex™ products may have a slight new-material scent when first unpacked. This is normal and dissipates quickly with airing.

Keloflex™ is designed for temperature-stable comfort. Not just maximum heat. The goal is to reduce the hot, clammy buildup that often happens under ordinary bedding. Instead of simply trapping heat and perspiration, Keloflex™ helps move excess heat and moisture away from the body, promoting a balanced sleep environment.

Even exceptionally warm bedding will make you feel colder once moisture collects from perspiration. By moving moisture away from the body, Keloflex™ keeps you in the perfect temperature range. Our system has ample insulation to keep you warm and comfortable along with the ability to move moisture out of your sleep environment.

Not at all. Keloflex™ is designed for everyday comfort. While it stands out in extreme conditions, the benefits are just as valuable for regular nightly use at home.

Yes. Keloflex™ is designed to support comfort through a broad range of changing room conditions and environmental factors.

Keloflex™ performs well with a variety of sleepwear.

Whatever your preferences, from sleeping in the nude, to fully dressed, we recommend pairing our products with breathable fabrics such as polyester, nylon, or satin.

For best performance, we recommend avoiding cotton and spandex with this system. Cotton tends to hold moisture, while spandex and cooling-style fabrics can work against the temperature-stabilizing effect Keloflex™ is designed to create.

The K3Core Duvet is for anyone who wants more stable, comfortable sleep, night after night.

It’s built for everyday bedding comfort, helping reduce hot-and-cold swings while managing moisture through the night. It’s also a strong fit for people who care about emergency preparedness, because its moisture-managing, temperature-stable, adaptable design is made to perform beyond normal bedroom conditions.

The K3core duvet insert is designed to function as a premium duvet insert while adding Keloflex™ moisture management performance.

We offer optional duvet covers for purchase with your duvet insert.

It can be used with your choice of duvet cover of appropriate size and secured with corner loops.

We recommend breathable fabrics such as polyester, nylon, or satin.

We recommend avoiding the use of cotton or spandex fabrics.

Down comforters are valued for lightweight warmth, but they can lose performance when moisture builds up through humidity, perspiration, or condensation.

The K3core duvet insert is different because it is built around Keloflex™. Instead of relying on loft for insulation and warmth, it manages moisture to stabilize and maintain the sleep climate in your bedding.

That makes it a better choice for people who struggle with hot/cold cycles, clamminess, or day-to-day moisture buildup.

Most synthetic comforters are made to replicate the performance of down, providing similar softness, loft, and warmth, while being easier to care for than down. However, they still encounter the issue of overheating, causing moisture buildup and leading to hot/cold cycles interrupting your sleep.

The K3core duvet insert uses Keloflex™ to move moisture away from the body, helping your bedding to feel and remain drier and more stable, allowing for uninterrupted sleep.

Wool manages moisture better than many materials, boasting a reputation for keeping you warm even when wet. However, wool has a distinct feel, can be heavy, and does not perform as well as Keloflex™ in moisture-management.

The GameChanger is designed as a versatile sleep system. It works extremely well as a supplemental liner to our Cocoon sleeping bags, boosting the performance of both items at lower temperatures.

Additionally, the GameChanger can be used as a standalone quilt for camping, travel, emergency preparedness, and everyday use.

Yes. That’s one of its strongest uses. The GameChanger can be placed inside any existing sleeping bag, adding the moisture-management and temperature-stabilizing benefits of Keloflex™ and significantly improving its performance without requiring you to replace your entire sleep setup.

Even premium sleeping bags can struggle with moisture buildup from sweat, breath, and condensation. The GameChanger adds a moisture-managing layer that helps protect comfort and performance night after night.

When added to our Cocoon series sleeping bags, it extends the comfort range into even lower temperatures.

The Cocoon sleeping bags are for anyone who wants more stable, comfortable sleep, even when in the outdoors. The Cocoon sleeping bags began their life as premium emergency survival gear, intended for use in harsh, cold and wet climates. With Keloflex™ now at their heart, they perform better than ever.

Yes. The GameChanger and Cocoon series sleeping bags are especially useful for head-in warmth.

In any conventional sleeping bag or quilt, breathing inside can quickly compromise the loft and insulation. Keloflex™ is designed to handle that moisture, allowing your sleep system to retain the warm air you breathe without trapping condensation.

Sizes are available on each product page.

For the Cocoon series sleeping bags, we recommend sizing up if you are at the upper limit of the recommended size.

Our temperature ratings are intended to reflect realistic comfort in the field for the average individual. We take a conservative approach to our ratings, prioritizing dependable comfort in real-world scenarios, not just survivability.

Yes. Our products were designed first for emergency preparedness. They are created to perform in unstable conditions, not just normal bedroom use.

Keloflex™ manages moisture, reduces heat loss from dampness, and maintains a more stable sleep environment when temperatures fluctuate, making it especially useful for grid-down situations, cold-weather emergencies, camping, vehicle kits, and backup bedding when reliable warmth and dryness matter most.

Yes. Our products are machine washable.

For best results, we recommend hanging to dry.

While placing our products in a commercial or residential dryer won't damage them, you may still notice moisture after a dry cycle. This is because Keloflex™ works by moving moisture from an area of high heat to an area of low heat. In a dryer, heat is applied from all directions, removing the heat differential, temporarily trapping the moisture in the insulation layer.

No. Our products are built with long-term performance in mind. There are no coatings or surface treatments to wash away.

The moisture-management performance comes from the material design itself.

Keloflex™ is designed to handle normal packing, compression, and regular use without losing its core moisture-managing or temperature-stabilizing properties.

Keloflex™ reduces the kind of trapped moisture buildup that can contribute to odor over time and is inherently antimicrobial, protecting against odor-causing buildup.

Our products are made to be durable and used repeatedly. Longevity depends on use, care, and storage, but the products are built with long-term comfort in mind.

No. Our products are passive sleep systems. They do not require power, batteries, cords, or charging to manage moisture and support temperature-stable comfort.

Available shipping options will be shown at checkout based on your location and the products in your order. For international orders, shipping availability and cost may vary by country.

Shipping costs are calculated at checkout using your delivery address and order details. This gives you the most accurate shipping rate before you place your order.

Orders are processed as quickly as possible. Exact timing may vary depending on product availability, order volume, and destination. Shipping time is estimated at checkout. If an item is in pre-order, Kickstarter, or launch status, the expected timeline will be listed on the product page.

We have a 100% satisfaction guarantee. If you don't like the product, contact K3core support for assistance or a refund.

Contact K3core support as soon as possible. If your order has not shipped yet, the team may be able to help adjust it. If it has already shipped, we can guide you through the available exchange or return options.

Yes. We offer a 100% satisfaction guarantee.

Your satisfaction is our priority. If your product has a defect or you’re not happy with it, you can return it for a refund at any time.

Contact K3core support if you are unsure which product is right for your sleep setup, camping system, or preparedness needs. We can help you choose the best fit before you order.