DownTo1 Packs

The engine's answer

Best sleeping bag in frosty nights near −5 °C, under €700

Robens

Gully 600

Cold-weather down at a price that keeps its head down.

  • Genuine cold rating for a mid price
  • Well-finished hood and collar
  • Roomy enough to layer inside
  • Heavy and bulky
  • Limited availability outside Europe

Find it at Bergfreunde · Trekkinn · Decathlon · Alpinetrek · eBay (used)

Why it wins, in numbers

Robens Gully 600 is the sleeping bag the engine picked for this trip: €260 and 1.40 kg, Comfort rating -7 °C, a 50% match on the questions asked. The kit around it comes to €680 of the €700 ceiling, leaving €20.

What the engine asked for: a sleeping bag rated to −7 °C or lower, a mat with an R-value of at least 4.5, a pack of at least 43 L, and €700 for all four; anything that falls short of these is flagged beside the item.

The kit it belongs to

Four items chosen together, not four separate winners. Swapping one moves the others.

4.35 kg on your back · €680 of a budget of €700

Tent
3F UL Gear Lanshan 2: €130, 1.10 kg, Season rating 3, 50% match.
Sleeping bag
Robens Gully 600: €260, 1.40 kg, Comfort rating -7 °C, 50% match.
Sleeping mat
Therm-a-Rest NeoAir XLite NXT: €230, 354 g, R-value 4.5, 50% match.
Backpack
Forclaz MT100 Easyfit 50: €60, 1.50 kg, Capacity 50 L, 50% match.

What the runners-up gave up

Each of these still leaves a kit that closes — the budget holds and the pack shuts. This is where each one lost.

  • Carinthia Defence 4A military-derived synthetic bag built to be abused for years.Carinthia Defence 4 — €280, 1.90 kg — gives up Fill power: 0 against the winner's 650. It scores 50% to the winner's 50%.
  • Alpkit PipeDream 400The value pick in down: proper warmth, unfashionable price.Alpkit PipeDream 400 — €280, 900 g — gives up Comfort rating: -4 °C against the winner's -7 °C. It scores 28% to the winner's 50%.
  • Forclaz MT900 −5 °C DownThe cheapest route to real cold-weather down.Forclaz MT900 −5 °C Down — €230, 1.15 kg — gives up Comfort rating: -5 °C against the winner's -7 °C. It scores 28% to the winner's 50%.

Questions this trip raises

How much does the whole kit cost?
€680 for all four items, €20 under the €700 ceiling. Prices are indicative euro list prices; the shops set their own.
How much does it weigh?
4.35 kg base weight — tent, sleeping bag, mat and pack together, before food, water and clothes. The pack is rated to carry 16 kg comfortably.
Is Robens Gully 600 warm enough for −5 °C nights?
Its comfort rating is -7 °C. For nights near −5 °C the engine requires a rating of −7 °C or lower, which it meets.

Change an assumption

This page answers one trip. Yours is not that trip — adjust the nights, the budget or the company and watch all four re-rank.

Build my kit

Specifications are manufacturers’ own published figures and prices are indicative, not live. Comfort ratings and R-values are comparable across brands but describe a standardised sleeper on standardised ground — neither is a promise about you on a particular night. Check the current spec and price with the retailer before buying.