Rab elevates sleep system collection for Spring/Summer 2026

March 12, 2026

Patented L.O.F.T 3D™ sleeping bag baffle technology delivers an exceptional warmth-to-weight ratio

March 12 2026 /OUTDOOR SPORTSWIRE/ – British outdoor and mountain brand Rab (owned by Equip Outdoor Technologies Ltd.) announces the launch of its most technically advanced sleep system collection to date. Building on decades of expertise that began with Rab Carrington’s first-hand‑stitched down bags, the Spring/Summer 2026 new range introduces innovations designed to give mountain people the confidence to rest, recover, and move efficiently on their adventures, from ultralight alpine pursuits to multi-day expeditions.

At the heart of the new collection lies patented L.O.F.T 3D™ as well as L.O.F.T™ (Lightweight Offset Funnel Technology) sleeping bag baffle construction – a breakthrough design to prevent cold spots and optimize down efficiency. By using an innovative new baffle design that reduces down migration, Rab has achieved the same warmth levels with less down, creating lighter, more packable sleeping bags without compromising thermal performance.

The flagship Mythic series features patented L.O.F.T 3D™, where offset baffle walls are twisted into a helix shape, creating funnel points that lock down in place throughout the night. Combined with 900FP goose down, TILT and ultralight 10D Pertex® Quantum fabric, the Mythic series delivers exceptional warmth at minimum weight – making it one of the lightest technical sleeping bag ranges in its category. This innovation has been recognized with a prestigious ISPO Award for the Mythic -6°C.

As the ISPO Award jury states: “The Mythic -6°C impresses with a consistently executed technical innovation: despite its low weight, the patented L.O.F.T 3D™ baffle construction marks a clear advancement in sleeping bag design. This high level of engineering is complemented by well-thought-out details, premium materials, and a responsible, PFAS-free finish. The result is a product that credibly brings together innovation and sustainability.”

Tim Fish, Product Director at Rab, comments: “We’ve spent years refining our baffle technology to solve a fundamental challenge in sleeping bag design: how to maximize warmth while minimizing weight and pack size. L.O.F.T™ and L.O.F.T 3D™ represent genuine breakthroughs in construction methodology. These aren’t incremental improvements – they’re step-changes in how we think about down placement and thermal efficiency.”

With its new sleep system collection, Rab have re‑engineered the entire category architecture, removing technical ambiguity and creating a cleaner, easier‑to‑navigate range. Instead of traditional fill‑weights, the new collection is now communicated around actual EN‑tested performance.

True to Rab’s tradition, every down sleeping bag in the collection is hand-filled with premium down in Derbyshire/UK, and never compressed during manufacturing, ensuring customers receive products at peak loft and performance. All down is treated with PFAS-free Grangers Down Defend® for hydrophobic properties, maintaining warmth even in damp conditions.

Rab’s new SS26 sleeping bags at a glance:

Mythic series – Ultralight performance for weight-conscious alpinists

• Features TILT & patented L.O.F.T 3D™ baffle technology
• 10D Pertex® Quantum with PFAS-free DWR
• 900FP goose down with Grangers Down Defend® hydrophobic treatment
• Weight from 500g (Mythic 0°C)
• Available in three temperature ratings: 0°C, -6°C, -12°C
• Award-winning design.

Neutrino series – All-mountain performance for experienced and weight-conscious mountaineers

• Patented L.O.F.T 3D™ construction with 800FP goose down with Grangers Down Defend® hydrophobic treatment
• 10D and 20D Pertex® Quantum with PFAS-free DWR
• Dual-fabric construction: tougher base and footbox, lighter top panel
• Weight from 700g (Neutrino 0°C)
• Available in four temperature ratings: 0°C, -6°C, -12°C, -18°C
• Four men’s variants, two women’s-specific models.

Alpine series – High-performance bags for ambitious alpine missions in cold conditions

• L.O.F.T™ baffle technology
• 20D Pertex® Quantum with PFAS-free DWR
• 650FP duck down with Grangers Down Defend® hydrophobic treatment
• Weight from 870g (Alpine 0°C)
• Available in four temperature ratings: 0°C, -6°C, -12°C, -18°C
• Four men’s variants, two women’s-specific models.

Ascent series – Roomy, comfortable bags for all-season outdoor adventures

• L.O.F.T™ construction with comfort-focused design
• Wide body and roomy footbox accommodate varied sleeping positions
• 20D Pertex® Quantum with PFAS-free DWR
• 650FP duck down with Grangers Down Defend® hydrophobic treatment
• Zipped arm opening
• Weight from 940g (Ascent 0°C)
• Extended range including -24°C option for men and women.

Radeon series – Resilient synthetic bags for varied conditions

• WARM WAVE™ construction technology with recycled Stratus™ synthetic insulation
• Concertina-style construction creates warm air pockets
• 20D Atmos™ recycled polyester ripstop fabric
• Weight from 660g (Radeon 6°C)
• Including seven different options for men and women.

The Spring / Summer 2026 season also introduces four new sleep mat designs, complementing the sleeping bag range and creating a comprehensive sleep system:

• Ionosphere 5.5 – Insulated air mat for winter and altitude,
• Ionosphere 5 – Lightweight packable mat for expeditions,
• Ultrasphere 5 – Ultimate warmth-to-weight with TILT technology,
• Ultrasphere 1.5 – Ultralight mat for fast-paced adventures.

Rab’s new Spring/Summer 2026 sleeping bag and sleep mat collections are available to consumers in spring.

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About Equip Outdoor Technologies Ltd.

Equip Outdoor Technologies UK Ltd is an international business with the head office based in Derbyshire, UK. We are proud to own both the Rab and Lowe Alpine brands. We design exceptional product to meet the needs of our active customers. We encourage our teams to thrive and be part of our success. Our passion for the outdoors and adventurous spirit sets the foundation for what we do. We have approved near and long-term science-based emissions reduction targets with the SBTi and are proud to be a Fair Wear Leader Brand. www.equipuk.com

Photo: Rab launches their new Spring/Summer 2026 sleep system collection. ©Rab