Winter Camping Gear Essentials: What You Need for Cold-Weather Nights

A Therm-a-Rest Z Lite Sol foam pad lists at $59.95 and has a published R-value of 2.0, and it belongs in most winter kits. A common first-winter mistake is buying a warm sleeping bag and sleeping on a thin three-season pad. Bag insulation compressed under your body adds little, so the pad does most of the work against frozen ground.

Winter warmth works as a stack. Sleep warmth is bag plus pads, and the weaker part limits the whole. Clothing is base, mid, puffy and shell, and sweat is what defeats it. The stove, the water plan and traction exist to keep you warm, dry and fed. This guide builds each part from the catalogue, and says so where the catalogue has nothing suitable.

For ground insulation, stack a Therm-a-Rest NeoAir XTherm NXT MAX Regular Wide air pad (650 g, MSRP $249.95, R 7.3 as Therm-a-Rest publishes it) on a Z Lite Sol foam pad (410 g, MSRP $59.95, R 2.0). R-values measured under ASTM F3340 can be added when pads are stacked, so the pair is roughly R 9.3. The foam protects the air pad from ice and sharp snow, and if the air pad deflates, the foam still insulates.

For insulation in damp cold, choose synthetic: the Arc'teryx Atom Hoody (355 g, polyester insulation) keeps more of its warmth when damp than down does. Add a regulated stove, the MSR PocketRocket Deluxe (97 g packaged, MSRP $84.95), and traction for packed snow and ice: Kahtoola MICROspikes (338 g, MSRP $89.95).

Skip exposed, above-treeline winter objectives until you have spent sheltered nights below treeline; in winter, hypothermia and navigation cause more trouble than missing equipment. For the bag, see the sleep-system section: a 20°F three-season bag is not a deep-winter bag.

The bag insulates you from the air and the pads from the ground; on snow, the ground draws more heat. The stack above — XTherm NXT MAX over Z Lite Sol, roughly R 9.3 — gives winter-level ground insulation with a backup built in. For milder cold, one pad can do: the NEMO Tensor All-Season (522 g packed, MSRP $219.95, R 5.4 as NEMO publishes it). Skip the single-pad plan when nights get properly cold, because an air pad alone leaves no backup if it deflates.

On the bag: the Kelty Cosmic Down 20 (1,106 g, MSRP $189.95) is a three-season bag by Kelty's own designation, and its 20°F figure is Kelty's claim, not an ISO 23537 rating. You can extend it with dry base layers, a puffy worn inside, a hat and a meal before bed; that works in the shoulder seasons, not in deep winter. Treat single-digit forecasts as beyond any three-season bag rated 20°F by its maker. For those nights, the winter bag in our catalogue is the Sea to Summit Alpine Down (1,459 g, MSRP $934.00, 850+ fill), which Sea to Summit lists at -20°F (-29°C) under ISO 23537.

Start moving slightly cold, because sweat soaks your layers and then chills you. The base layer is merino or synthetic, not cotton: the Smartwool Classic Thermal Merino 1/4 Zip (MSRP $130.00), or the MERIWOOL Midweight Merino Base Layer Top. Over it, a fleece to hike in: the Columbia Steens Mountain Full Zip 2.0 (MSRP $65.00).

The puffy goes on as soon as you stop. In damp cold the synthetic Arc'teryx Atom Hoody (355 g) is the safer choice, because down loses loft when wet. In dry cold, down gives more warmth for its weight: the Outdoor Research Helium Down Jacket, with 800-fill down. Add a shell when the wind picks up: the Marmot PreCip Eco is a waterproof 2.5-layer jacket that also blocks wind.

Winter cooking is mostly melting snow and boiling water, and cold makes canister stoves weaker: as a canister chills and empties, its pressure drops and an unregulated stove's output falls. A regulator holds output steadier as pressure falls, but it cannot make the fuel vaporize when the canister is too cold, so keeping the canister warm still matters. The MSR PocketRocket Deluxe (97 g packaged, MSRP $84.95) has a pressure regulator and push-start ignition; MSR publishes 3.3 minutes to boil a liter and 17 liters boiled per 227 g canister. The MSR WindBurner Personal (465 g packaged with its integrated pot, MSRP $199.95) adds an enclosed radiant burner designed for wind; compare it with the Deluxe plus a pot, not with the burner alone.

Skip the WindBurner if you cook in sheltered spots below treeline. For cold-weather trips, skip unregulated stoves. Whatever you carry, keep the canister inside your jacket before cooking, set it on foam rather than snow, and never run a stove inside a closed tent.

Plan for ice: packed winter trails often freeze hard. Kahtoola MICROspikes (338 g, MSRP $89.95) are the common choice. The Hillsound Trail Crampon (462 g, MSRP $84.95) has longer spikes (1.7 cm, per Hillsound) and a strap across the foot for steeper packed terrain. The Yaktrax Pro (MSRP $29.99) is the low-cost option for gentle walking; skip it for mountain trails, where its coils grip less than spikes.

For deep, soft snow, use snowshoes: the MSR Evo Trail 22 (1,640 g, MSRP $179.95) has a molded deck, and the Tubbs Flex TRK is the alternative. Carry traction even when the trailhead is bare; conditions change with elevation.

Store bottles upside down so ice forms at the bottom, away from the lid. A wide-mouth bottle such as the Nalgene 32 oz (178 g, MSRP $16.99) takes longer to ice shut than a narrow one, and hydration hoses freeze quickly, so leave the bladder at home. A tightly closed bottle of hot water in your sleeping bag warms it at night and is still liquid in the morning. Hollow-fiber filters can crack if they freeze, and a filter that may have frozen should be treated as broken. In freezing weather, keep the Sawyer Squeeze (85 g, MSRP $45.99) in your jacket or sleeping bag, or use Aquamira treatment drops (MSRP $24.99). Cold does not damage chemical treatment, though it needs a longer contact time in cold water.

Four-season tents are in the catalogue. The MSR Access 2 (1,843 g, MSRP $799.95) is a two-person four-season tent MSR builds for ski touring, and the MSR Remote 2 (3,544 g, MSRP $859.95) is a two-person mountaineering tent. Below treeline in moderate conditions, a well-pitched three-season tent with a full fly is often enough; exposed ridgelines and heavy snow loading call for a four-season tent. Skip the Remote 2 for sheltered camps; at 3,544 g it is built for exposed, high ones.

Insulated winter boots and avalanche safety gear are not in our catalogue, so this guide names no products for them. If your plans include steep open snow, get avalanche training and read the current avalanche forecast before you think about gear.

The plan matters more than the gear list. If a gear failure at your forecast low would be an emergency rather than a bad night, change the kit or change the plan.