New Rime IN Flex Hooded Jacket Synthetic Jackets

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Lightweight, packable, and versatile, the Rime IN Flex Hooded Jacket is an excellent choice for active outdoor enthusiasts who value freedom of movement and comfort.

Mammut says: 

The perfect all-rounder, this insulated jacket combines exceptional warmth with lightweight packability to keep up with all your mountain pursuits. Wind and abrasion resistant, its durable water repellent (DWR) coating protects you from light showers, while zoned insulation ensures optimal thermal protection without restricting movement. Featuring an adjustable hood and three zippered pockets, it’s a practical and versatile choice for exploring the great outdoors.

All Mammut products purchased within the Europe come with an extended 30-month warranty period. For more details click here.

Our Verdict

The Mammut Rime IN Flex Hooded Jacket is a versatile and lightweight mid-layer designed to keep you warm without compromising mobility or breathability. Its blend of thoughtful features and performance materials makes it well-suited to a variety of mountain activities.

Weighing 454g in a medium, the jacket feels exceptionally lightweight but still provides robust protection. The zoned insulation – 80g/m² on the body and 60g/m² on the arms and hood – strikes a good balance between warmth and flexibility, keeping you cosy without feeling bulky. The Pertex Quantum Air fabric enhances breathability while offering wind and water resistance, and its PFC-free DWR treatment handles light showers effectively.

Practical details include a well-fitted, adjustable hood, two backpack-compatible zip pockets, and an elasticated hem and cuffs that prevent heat loss. Its ability to pack into its own pocket is particularly handy for those looking to minimise bulk. While it’s not intended for extreme conditions, this jacket shines as an all-rounder for milder climates or high-output adventures.

– Reviewed by Ultralight Outdoor Gear

Features

• Extremely soft, lightweight, wind- and water-repellent material with a PFC-free DWR treatment
• Zoned Loopinsulation (80g/m² body, 60g/m² arms and hood)
• 1-point adjustable hood
• 2-way front zipper
• 2 backpack and climbing-harness-compatible zipper pockets
• Zippered chest pocket
• Adjustable waist with drawstring
• Elasticated cuffs
• Small packing volume: Jacket can be stowed in the front right pocket

Specifications

• Small weighs: 424g
• Medium weighs: 454g
• Large weighs: 479g
• XLarge weighs: 489g
• Cut: Regular Fit

Material & Construction

• Filling 1 – Face Material (B2B): 100% Polyester (recycled)
• Denier (main material): 20Dx20D
• Lining 1 – Face Material (B2B): 100% Polyamide
• Filling (B2B): 80 / 60 g/m² Recycled Rope Insulation
• Loopinsulation
• Pertex® Quantum® Air
• Main Fabric 1 – Face Material (B2B): 100% Polyamide
• Lining 1 (B2B): Pertex® Quantum Air
• Main Fabric 1 (B2B): Polyamide woven
• PFC-free DWR
• Fair Wear

Help & advice:

• Time-Saver Guide to Choosing a Synthetic Jacket
• Synthetic Insulation Explained
• Recycled Content in Outdoor Gear
• Why is ‘PFC Free’ Important?