The North Face Dolomite One 15F/-9C 3-in-1 Insulated Sleeping Bag – Water-Repellent, Rectangular, Fleece-Lined (Long)

The The North Face Dolomite One 15F/-9C is a flexible, 3-in-1 insulated sleeping sack designed for solo campers who chase comfort across a wide range of conditions. Its rectangular silhouette provides generous space to move, while smart layering creates adaptable warmth without packing excess weight.

Versatile 3-in-1 sleep system

This bag ships as a modular sleep system with three layers that can be used separately or together to cover a broad temperature range. The top layer carries 50-degree synthetic insulation for warmer nights, and the mid-layer features 30-degree insulation for cooler evenings. When you pair the two layers, you can target approximately a 15-degree bag, ideal for shoulder-season trips. Keep in mind that actual temperatures depend on climate, wind, and humidity, so adjust layering to your comfort and conditions.

• Three-layer adaptability supports a wide spectrum of environments from mild to cool.
• Layered insulation offers flexible warmth without committing to a single temperature rating.

Fabric, fit, and in-sack features

The Dolomite One is designed with a fleece-lined mid-layer that adds a cozy feel against the skin and helps trap warmth. The rectangular shape promotes freedom of movement, so you can switch positions, stretch, or adjust gear inside the bag. If you sleep warm, zippers run from the bottom for ventilation, letting you fine-tune airflow without sacrificing comfort.

• Fleece-lined mid-layer enhances comfort on cooler nights.
• Rectangular silhouette provides room to maneuver and sprawl out as needed.
• Bottom-zip ventilation enables adjustable airflow to reduce overheating.

Durability, warmth, and size options

Key build details include a Durable Water-Repellent (DWR) finish that’s non-PFC-coated, helping shed light moisture on damp outings. Regular and Long sizes accommodate different heights, with Regular supporting up to 6 feet (183 cm) and Long up to 6 feet 6 inches (198 cm). The Regular weighs around 5 pounds, while the Long sits at about 5 pounds 13 ounces. Packed dimensions place the Dolomite One into a compact carry profile for its class.

• Non-PFC DWR coating adds water-shedding capability without harsh chemicals.
• Regular and Long options cover a broad height range for solo campers.
• Light to mid-weight build suitable for multi-season trekking in a single sleep system.

Practical in-field use and care

Whether you’re starting a weekend in a shed tent or extending trips into shoulder seasons, this bag aims to adapt to your pace. It’s built to be practical and comfortable without overpromising outcomes, inviting you to tailor warmth with layers and ventilation as needed. For care, follow typical sleeping bag guidelines to maintain loft and insulation performance over time.