Lunar I Ultralight Sleeping Bag (5°C)

Ultralight comfortable sleeping bags for warmer adventures

Built for backpackers and trekkers seeking a lightweight, packable sleeping bag for spring and summer travel. Engineered with POLARLOFT® insulation and an alpine-focused design, the Lunar I delivers dependable warmth while keeping pack weight to a minimum.

Performance & Engineering

• POLARLOFT® Insulation Engineered to provide reliable warmth with a Good Night's Sleep Temperature of 5°C / 40°F.
• Lightweight Construction Built with single layer construction throughout to reduce weight and improve packability for fast-moving adventures.
• Durable Outer Fabric Designed with Lunar 40D outer fabric to balance comfort and durability on extended trips.
• Thermally Efficient Shape Built around an alpine fit to maximise thermal efficiency and reduce unnecessary internal volume.
• Trail-Ready Features Engineered with an anatomically shaped hood and foot-box, full-length zip baffle, and a lightweight compression sack for efficient packing and comfortable nights outdoors.

Technical Specifications

• Ideal For: Backpacking & Trekking
• Main Fabric: Lunar 40D outer fabric
• Weight: 810g / 1lb 12.6oz
• Hardware: Full-length zip with zip baffle
• Pockets / Features: POLARLOFT® insulation, single layer construction throughout, anatomically shaped hood and foot-box, lightweight compression sack
• Fit: Alpine fit

Care & Longevity

Follow the manufacturer's care label instructions to maintain insulation performance and product longevity. Do not exceed the recommended washing and drying instructions provided by the manufacturer. Store uncompressed when possible for long-term performance.