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Warm, lightweight and reliable down sleeping bag for winter trips and cold mountain nights

Pajak CORE 750 Regular is the sleeping bag for those who continue out when the frost bites and the temperature drops far below zero. This is a serious winter sleeping bag, built for long bivouacs, demanding mountain hikes and nights where the cold really challenges you.

With a comfort temperature of -5°C and a limit of -12°C, it keeps you warm and safe even in cold winter conditions. Perfect for winter hiking, autumn mountaineering, summit tours, overnight cross-country skiing or any adventure where you need a sleeping bag you can trust.

Premium down with maximum loft and durable insulation

The CORE 750 is filled with a whopping 880g of top-quality Polish RDS-certified white duck down . The down has an impressive fill power of 700 CUIN , which means excellent warmth-to-weight ratio and long-lasting loft.

The down is housed in Z-shaped baffles , a design that prevents down migration and eliminates cold spots, providing even heat distribution and reliable performance for years to come.

Durable and ultra-light outer material – developed for cold and damp environments

The outer fabric consists of Toray Airtastic SLF15 combined with GELANOTS Ultra Light Ripstop , which makes the sleeping bag:

extremely light

stronger than its weight suggests

wear-resistant

moisture repellent with DWR treatment

Pajak uses an advanced Moisture Management System (HMS) that prevents the down from absorbing condensation. The most vulnerable areas – around the head and feet – are extra reinforced because that is where condensation naturally occurs first.

The result? You won't wake up in a damp sleeping bag, even when the weather and temperature change.

Low weight, small packing volume – maximum function

Despite its winter capabilities, the CORE 750 weighs just 1415 grams in Regular and packs down to a volume of under 7 liters . It takes up minimal space in your backpack – perfect for alpine tours, hiking, bikepacking or when you want to travel light but still warm.

Well-thought-out design for use in tough conditions

The CORE 750 is designed to be easy to handle – even in the dark, with frozen fingers or when wearing gloves.

Functional details:

One-hand adjustable hood

Drawstring collar retains warmth around the shoulders

YKK zipper that runs without getting stuck

Internal draft tube that prevents heat leakage

Internal pocket for phone, headlamp or valuables

Drying loops for quick airing in camp

You also get two storage bags :

a compression sack for packing in the backpack

an airy mesh bag for long-term storage (preserves the loft of the down)

Technical specifications (Regular)

Weight: 1415g

Filling weight: 880 g

Down: Polish white duck down, 90/10 , 700 CUIN , RDS‑certified

Material: Toray Airtastic SLF15 / GELANOTS Ultra Light Ripstop

Temperatures (EN13537 / ISO23537):

Comfort: –5°C

Limit: –12 °C

Extreme: –32°C

User height Regular: up to 180 cm

Why choose Pajak CORE 750 Regular?

Reliable heating capacity for cold winter rides

High-quality and ethical down with RDS certification

Fantastic balance between weight, pack volume and warmth

Moisture-resistant design for real winter conditions

Extremely durable and ultra-light outer material

Smart, well-thought-out design for use in harsh environments

Suitable for both experienced winter hikers and demanding mountain tours

Pajak CORE 750 Regular – Navy is the sleeping bag for those who want maximum security, warmth and comfort – without compromising on weight or packability.

This is winter gear you can really rely on, night after night.