DownTo1 Packs

The engine's answer

Best sleeping mat in chilly nights around 3 °C, under €1500

Therm-a-Rest

NeoAir XLite NXT

The default answer for three-season backpacking, and deservedly.

  • Very high warmth for the weight
  • Packs to roughly the size of a water bottle
  • The NXT revision is markedly quieter than the old one
  • Still crinkles more than a foam mat
  • Thin fabric wants a groundsheet on rough pitches

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

Why it wins, in numbers

Therm-a-Rest NeoAir XLite NXT is the sleeping mat the engine picked for this trip: €230 and 354 g, R-value 4.5, a 50% match on the questions asked. The kit around it comes to €1,490 of the €1,500 ceiling, leaving €10.

What the engine asked for: a sleeping bag rated to 1 °C or lower, a mat with an R-value of at least 2.5, a pack of at least 33 L, and €1,500 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.

3.36 kg on your back · €1,490 of a budget of €1,500

Tent
Nemo Hornet OSMO 2: €550, 1.08 kg, Season rating 3, 50% match.
Sleeping bag
Rab Neutrino 400: €470, 830 g, Comfort rating -2 °C, 50% match.
Sleeping mat
Therm-a-Rest NeoAir XLite NXT: €230, 354 g, R-value 4.5, 50% match.
Backpack
Osprey Exos 48: €240, 1.10 kg, Capacity 48 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.

  • Therm-a-Rest ProLite PlusSelf-inflating, robust, and hard to puncture into uselessness.Therm-a-Rest ProLite Plus — €130, 650 g — gives up Thickness: 3.8 cm against the winner's 7.6 cm. It scores 50% to the winner's 50%.
  • Sea to Summit Ether Light XT InsulatedTen centimetres of air for people whose hips hate the ground.Sea to Summit Ether Light XT Insulated — €200, 480 g — gives up R-value: 3.2 against the winner's 4.5. It scores 50% to the winner's 50%.
  • Sea to Summit Ultralight InsulatedA well-priced three-season air mat with no bad habits.Sea to Summit Ultralight Insulated — €150, 480 g — gives up Thickness: 5.0 cm against the winner's 7.6 cm. It scores 50% to the winner's 50%.

Questions this trip raises

How much does the whole kit cost?
€1,490 for all four items, €10 under the €1,500 ceiling. Prices are indicative euro list prices; the shops set their own.
How much does it weigh?
3.36 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 Therm-a-Rest NeoAir XLite NXT warm enough on the ground at 3 °C?
Its R-value is 4.5. For nights near 3 °C the engine requires at least 2.5, 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.