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ThermoFlex Module sleeping system
Price range: $428.00 through $498.00
ThermoFlex combines a fully three-dimensional inner quilt with an enclosing shell. ICEFLAME field guidance places the inner quilt around -5°C to -10°C, with the complete system extending toward approximately -20°C. The modules can also be opened or separated for milder conditions. One size. Designed for users approximately 165-188 cm (5 ft 5 in-6 ft 2 in).
INTRO
ICEFLAME developed the ThermoFlex Modular Sleeping System for hikers, mountaineers and campers who want one adaptable setup for changing conditions.
Depending on the configuration, the system carries up to 1,000 g of down while keeping the complete setup under 1,500 g. Its two-part design pairs an insulated upper module with a multipurpose lower module, allowing the system to be adjusted for cold or mild trips.
ThermoFlex packs to approximately 10 L and uses breathable, lightweight tear-resistant fabric with RDS-certified down. The modular format is intended for trekking, mountaineering, camping and vehicle-based trips where adaptable insulation is more useful than a fixed-format sleeping bag.
Soft, Duvet-Like Feel: High-loft 95% Muscovy duck down is enclosed by a grey 10D nylon shell and a yellow 10D nylon lining, producing a soft feel with close, even coverage.
Modular Flexibility: The lower module includes an adjustable hood, while the upper module unfolds into a quilt. Use them separately for flexibility or connect both sections for more insulation and coverage.
Temperature Control Across Configurations: The quilt can be used on its own, or both modules can be joined when colder conditions require additional coverage. ICEFLAME field guidance spans approximately -20°C to above +20°C across the available configurations.
Packable for a Full Modular System: The complete system weighs under 1,500 g and compresses to approximately 28 x 25 cm, depending on how the modules are packed.
Water-Repellent, Breathable 10D Nylon: The breathable, water-repellent 10D fabric helps move moisture vapour away from the sleeper. Mature down retains its natural oils, while the fabric package is designed to reduce moisture build-up inside the system.
Down Without Fluorinated Treatment: The down is specified without fluorinated water-repellent coatings or PFAS treatment.
SPECIFICATIONS
Down: 95% Muscovy duck down, 850FP standard / 900FP optional
Outer fabric: 10D nylon
Lining: breathable 10D nylon
Packed size: 28 x 12 cm / 11 x 4.7 in
The lower end of the field-use guidance is more appropriate for warm sleepers. Cold sleepers and users with lower body fat should add approximately 5°C for comfort. Pad insulation, clothing, shelter and weather also affect warmth.
STRUCTURE
3D BOX-WALL CONSTRUCTION
The ThermoFlex lining is cut slightly smaller than the outer shell, creating space for the down to loft without the inner fabric pulling the shell flat.
| Weight | N/A |
|---|---|
| DOWN TYPE | 850FP 95% Muscovy Duck Down, 900FP 95% Muscovy Duck Down |
Shipping & Delivery
Made-to-order timing, shipping options, customs notes and tracking details from our main shipping policy.
Production Time
Most sleeping bags are made to order. Standard manufacturing time is 3-7 business days; special sizes or models may require more time.
Pre-Shipment Processing
After production, your order moves through local logistics to international carrier warehouses. This usually takes another 3-5 business days before export.
EU Shipping
EU orders ship via a European warehouse. Average transit time, including customs and delivery, is 2-3 weeks. No import taxes or duties apply to EU customers.
Shipping Options
Priority: 5-10 business days for Europe and the Americas after handling. ECONOMIC: typically 8-18 business days, depending on country.
Shipping Cost
Most product prices include ECONOMIC shipping by default. Free shipping is automatically applied to orders over $90 USD.
Tracking & Carriers
Shipments are trackable. Final delivery may be handled by carriers such as USPS, Royal Mail, Japan Post, SAGAWA, La Poste, DHL, DPD, PostNL, Canada Post or regional partners.
Import duties, if applicable outside the EU, are the buyer's responsibility. Priority shipping may not be available for FedEx-defined rural areas.
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