New Radical ULZ Down Sleeping Bag Down Sleeping Bags

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The Pajak Radical ULZ Down Sleeping Bag offers an impressive warmth-to-weight ratio with a comfort rating of 5°C and a limit of 0°C. Weighing just 362g, it’s perfect for ultralight backpackers. The 900-fill power Polish white goose down provides exceptional insulation, and the GELANOTS Ultra Light Rip Stop shell ensures durability.

Pajak says: 

Radical ULZ sleeping bag is a lightweight and compact quilt-style sleeping bag designed for ultralight enthusiasts who are focused on minimizing the weight of their gear. It is made with high-quality materials that are designed to provide warmth and comfort in cold weather. The integrated draw cord allows you to secure the sleeping bag around your shoulders to help keep you warm, and it can also be used as an insert in a regular sleeping bag for added warmth on colder nights. This sleeping bag is designed to take up minimal space in your backpack, making it a great choice for backpacking trips where every gram counts.

Our Verdict

The Pajak Radical ULZ Down Sleeping Bag is a stand-out choice for ultralight backpackers. This quilt-style bag offers an impressive warmth-to-weight ratio, with a comfort rating of 5°C and a comfort limit of 0°C. Weighing just 362g, it’s a featherlight addition to your pack that doesn’t compromise performance.

The 900-fill power Polish white goose down provides exceptional insulation, while the GELANOTS Ultra Light Rip Stop shell ensures durability. The 3D down-filled zipper and collar baffles are thoughtful additions that extend the temperature range, making this bag a versatile choice for various conditions, without compromising on comfort.

With a tiny 1.4L packed volume, the Radical ULZ is perfect for minimalist hikers and backpackers. The integrated drawcord and single-hand waist/hip regulation allow easy temperature control.

While the 165cm length may be snug for taller users, the overall design and quality make the Pajak Radical ULZ an excellent choice for those prioritising lightweight gear without sacrificing warmth and functionality.

– Reviewed by Ultralight Outdoor Gear

Features

• It features 3D down-filled zipper and collar baffles which significantly increase its temperature range, making it suitable for use in a variety of weather conditions.
• The T-bar style zipper puller on the main zip is easy to find and prevents snagging, making it easy to get in and out of the sleeping bag.
• Overall, the Radical 4Z sleeping bag is a high-quality, versatile option for anyone looking for a reliable all-season sleeping bag.
• External hang loops
• Single hand waist/hips regulation
• Compression/storage sack included

Specifications

Temperature Rating

• EN13537:2012 Comfort: 5°C
• EN13537:2012 Comfort Limit: 0°C

• Weight: 362g (including preattached stuff sack)
• Inner length: 165cm
• Outer length: 165cm
• Shoulder width: 80cm
• Foot width: 50cm
• Packing Volume: 1.4L

Material & Construction

• Fabric: GELANOTS® Ultra Light Rip Stop Shell
• FILL: 900 FP RDS Polish White Goose Down
• Fill Weight: 160g