NEMO Riff Mens 30 Long Blaze/Deep Water – Ultralight 3-Season Down Sleeping Bag

Overview

The NEMO Riff 30 Long in Blaze/Deep Water is a premier backcountry sleeping bag designed for ultralight trekkers who want comfort without excess weight. Built around a Spoon-shaped cut, it offers more elbow and knee room for side sleepers while keeping the pack lean for long days on trail.

This is a 3-season bag featuring high-loft 800-fill down that balances warmth with weight to help you move efficiently between camps. The design prioritizes freedom of movement, so you can adjust sleeping position without compressing insulation or sacrificing loft.

Why the Spoon Shape Matters

Traditional mummy bags can feel restrictive for those who sleep on their side. The Riff’s Spoon profile adds space where you need it most, letting you shift positions through the night and wake up refreshed for another day outdoors.

Key Features at a Glance

• Ultralight Spoon shape that accommodates side sleeping with elbow and knee room
• 800-fill down for efficient warmth and compressibility
• Thermo Gill vents to help regulate temperature as conditions change
• Blanket Fold draft collar for snug, tucked-in comfort when the night turns cool
• Waterproof/breathable footbox that withstands tent condensation
• Left zipper on the men’s bag and right zipper on the women’s bag enable pairing for a double bag

Use Scenarios and Benefits

• Three-season performance supports a wide range of camping conditions and elevations
• Compact packability helps you maximize space in your backpack for other essentials
• Dual-zip compatibility offers flexible setup when camping with a partner

Real-World Considerations

In damp or cool campsites, the waterproof/breathable footbox and draft collar aid comfort by preserving loft and minimizing drafts. Regular care—proper lofting, drying after damp trips, and following down-care guidelines—helps maintain performance over many adventures. While warm nights feel luxurious, the ventilated design supports temperature management on climbing approaches or longer treks where temps swing from dusk to dawn.