Sleeping Bags Buying Guide: Best Picks for Ireland

There’s nothing quite like the promise of a good night’s sleep under the stars — until you wake up shivering at 3 a.m. If you’re shopping for a sleeping bag in Ireland, you’re probably wondering which temperature rating actually works for our cool, damp climate and where to find a decent bag without breaking the bank. We’ll look at how the ISO 23537 rating system, now the international standard for sleeping bag thermal performance, works in practice, what different temperature numbers really mean, and which brands deliver real warmth given typical Irish camping conditions — from a balmy August night in Connemara to a crisp Easter weekend in the Wicklow Mountains.

Average price for a quality 3-season sleeping bag: €80–€150 ·
Temperature rating range for most camping bags: -10°C to 10°C ·
Number of sleeping bag types (mummy, rectangular, semi-rectangular): 3 ·
Typical weight of a lightweight summer bag: 0.8–1.5 kg ·
Tog rating for a 21°C room (2.5 tog): Too warm for most adults

What is the best sleeping bag to buy?

There’s no single “best” for everyone, but for camping across Ireland the choice narrows to a few solid options. The key is matching the bag to how you’ll use it — festival weekenders, hillwalkers, and family campers all need something different.

Best overall sleeping bag for camping in Ireland

For three-season use in Irish conditions (spring to autumn, temperatures ranging from about 10°C down to -5°C), a mummy-shaped synthetic bag with a comfort rating around 0°C gives the best balance. Brands like Rab and Therm-a-Rest lead the premium end — Rab uses EN ISO 23537 to rate its bags (Rab, outdoor equipment manufacturer). At the mid-range, Karrimor and Gelert offer reliable bags that often cost €60–€100. The Outdoor Adventure Store Ireland lists 43 sleeping bag products (Outdoor Adventure Store, Irish outdoor retailer), so there’s plenty of choice.

Best budget sleeping bag

If you’re camping once or twice a year, a bag under €50 will do. Decathlon’s own brand (Quechua) is consistently well-reviewed for value. Aldi also brings in sleeping bags during special buys — often praised for the price. A Tropical 60 Sleeping Bag from Outdoor Adventure Store Ireland goes for €29.95 (Outdoor Adventure Store Ireland). Just check the comfort rating: budget bags often have a limit rating much lower than what’s comfortable for most.

Best sleeping bag for festivals

For festivals, you want something light, easy to carry, and warm enough for summer nights (10–15°C). Great Outdoors Ireland advises that a lightweight bag with a comfort rating around 10°C to 15°C is suitable for warmer scenarios (Great Outdoors, Irish outdoor retailer). A rectangular bag works well here — less restrictive and easy to air out.

What temperature is a 20 degree sleeping bag good for?

“20 degree” without the unit causes confusion — Celsius or Fahrenheit? In Ireland, we use Celsius, but many imported bags use Fahrenheit. A 20°F bag is about -6°C. That’s a serious cold-weather bag, suitable for late autumn or early spring nights here.

Understanding temperature ratings: comfort vs. limit vs. extreme

The ISO 23537 system defines three ratings: Comfort (the temperature at which a standard woman can sleep comfortably), Limit (standard man), and Extreme (survival only). Sea to Summit explains that the lower-limit figure on a unisex bag is intended for a standard male (Sea to Summit EU, outdoor equipment manufacturer). For most users, the Comfort rating is the key figure (Sea to Summit EU).

What does a 20°F (-6°C) rating mean for Irish camping?

A 20°F bag is overkill for a typical Irish summer night (12–15°C), but just right for a crisp April night in the mountains. The North Face suggests winter sleeping bags should be around -9°C and summer bags around 2°C as a general rule (The North Face, global outdoor brand). So a 20°F bag fits that winter category. If you use a liner, you can extend its range a few degrees lower.

The pattern: A 20°F bag is a winter bag in Irish terms. For most spring/summer/autumn camping, a 30°F to 40°F (0–5°C comfort) bag is more versatile.

How much should a good sleeping bag cost?

Price follows fill type, weight, and brand. Here’s how the market splits for Irish buyers.

Budget sleeping bags (under €50)

These are often synthetic, heavy (1.5–2.5 kg), and have a comfort rating around 10°C. They work for summer car camping or kids’ sleepovers. Charles Camping Ireland notes it was possible to buy a 5-season, winter expedition bag with a -20°C rating for less than €40 in Dublin (Charles Camping, Irish camping retailer) – that’s an extreme case. As a rule, a bag under €30 may not keep you warm or last.

Mid-range sleeping bags (€50–€150)

This is the sweet spot for most campers. You get a reliable synthetic bag from Karrimor, Gelert, or Trespass, usually with a comfort rating between -5°C and 5°C. Decathlon’s €60–€90 range is popular. RDMH in Ireland lists a Therm-A-Rest Questar 32°F/0°C Long Sleeping Bag at €275.00, discounted from €315.00 (RDMH, Irish outdoor equipment store) – that’s at the premium end of mid-range.

Premium sleeping bags (over €150)

Down-filled bags from Rab, Therm-a-Rest, or Mountain Equipment cost €150–€400+. They are lighter (under 1 kg), very compressible, and last years if cared for. Mountain Equipment says ISO 23537 is the best rating system despite some shortcomings (Mountain Equipment, premium outdoor brand). For serious backpacking, the weight saving is worth the price.

The catch: Down loses insulation when wet — a real risk in Irish rain. Hybrid bags (down top, synthetic foot box) are gaining popularity.

What are the three types of sleeping bags?

The shape determines warmth, space, and packability. Here’s a quick comparison.

Mummy sleeping bags

Tapered, narrow at the feet, with a hood. Best heat retention because there’s less air to warm. Mummy bags are the go-to for cold-weather camping and backpacking.

Rectangular sleeping bags

Roomier, like a blanket with a zip. Less insulating because your body can move around. Good for car camping, sleepovers, or warm summer nights.

Semi-rectangular (barrel) sleeping bags

A compromise: more leg room than a mummy, but still some tapering. They usually have a hood. Popular for general camping where warmth and comfort both matter.

The trade-off: More space = less warmth. Mummy bags are the most efficient for keeping heat in, but some people find them claustrophobic. If you can’t decide, a semi-rectangular bag is a safe bet for three-season use.

Will a 50 degree sleeping bag keep you warm?

“50 degree” typically means 50°F (10°C). That’s a summer-only bag.

What 50°F (10°C) means in practice

At 10°C, a 50°F bag’s comfort rating is around 12–15°C for a standard woman and 10°C for a standard man. A Reddit user on a camping forum put it bluntly: “You will be cold at 45°F with a 50°F bag without a liner.”

When a 50°F bag is sufficient

For Irish summer nights (typically 12–15°C), a 50°F bag paired with a sleeping pad and a liner is adequate — especially inside a tent. The North Face reminds that the kind of sleeping pad and shelter affect warmth (The North Face).

When you need a warmer bag

If the temperature dips below 10°C, you’ll be cold. For typical Irish spring/autumn evenings (5–10°C), you need a bag with a comfort rating of at least 5°C. Feathered Friends advises choosing a bag rated slightly below the coldest temperature you expect (Feathered Friends, down sleeping bag specialist).

The implication: A 50°F bag is a summer bag in Ireland. For anything outside June–August, look for a bag rated at least 5°C comfort or lower.

Which brand of sleeping bag is best?

Brand choice depends on your budget and how often you camp. Here’s how the main players stack up for Irish buyers.

Rab and Therm-a-Rest (premium)

Both are top-tier for outdoor enthusiasts. Rab uses EN ISO 23537 (Rab) and offers down and synthetic options. Therm-a-Rest’s Questar series (starting around €275) is widely available from Irish stores like RDMH (RDMH).

Karrimor and Gelert (mid-range)

Reliable and widely sold in Irish outlets like Halfords and Sports Direct. Expect synthetic fill, comfort ratings around 0–5°C, and prices €60–€100. Good for occasional campers who want a solid bag without spending a fortune.

Aldi and Decathlon (budget)

Aldi’s special buys often include sleeping bags that punch above their price; they’re well-reviewed for occasional use. Decathlon’s Quechua range is consistently a best-seller — good value, decent warmth, and easy to find in stores in Dublin and online.

The pattern: For a bag you’ll use twice a year, buy from Aldi or Decathlon and save. For regular camping, go Karrimor/Gelert. For serious treks or winter camping, invest in Rab or Therm-a-Rest.

Three shapes, one clear pattern: the more tapered the design, the warmer and more packable the bag.

Three price bands reveal one trade-off: lighter weight and better compressibility cost more.

Sleeping Bags: Pros and Cons Overview

Confirmed Facts vs. What Stays Unclear

What experts and users say

A bag’s comfort rating is the most reliable indicator for most sleepers. Don’t rely on the limit rating unless you’re a cold sleeper; the comfort number tells you what temperature a typical person will sleep well.

— Great Outdoors Ireland, outdoor equipment guide

You will be cold at 45°F with a 50°F bag without a liner. Get a liner or a warmer bag. Trust me, I learned the hard way.

— Reddit user, camping forum (camping subreddit)

The lower-limit figure is intended to indicate the temperature at which a standard male should be comfortable down to that air temperature. But actual user warmth still depends on personal factors and conditions.

— Sea to Summit EU, technical explanation

ISO 23537 replaces the European Union protocol EN 13537. It is the international standard for testing sleeping bag thermal performance.

— Sea to Summit EU, product care guide

The takeaway: Shopping for a sleeping bag in Ireland doesn’t have to be guesswork. The ISO 23537 standard gives you a consistent benchmark, but your personal comfort depends on your metabolism, the bag’s shape, and whether you’re using a good sleeping pad. For the Irish camper, the choice is pragmatic: a 0°C comfort-rated synthetic mummy bag around €100 will cover 90% of your nights out. For the dedicated hillwalker, saving up for a down bag from Rab or Therm-a-Rest is a solid investment. But if you’re only heading out a handful of times a year, Decathlon’s Quechua or Aldi’s special buys will serve you well — just remember to check the comfort rating, not the limit. Irish campers should match the bag to the coldest night they expect, buy from a trusted retailer, and always pack a liner for extra warmth.

For a detailed breakdown of the top models and retailers, check out our guide to the best sleeping bags for Ireland.

Frequently asked questions

Related reading: Bunk Beds Age Guide & Safety Tips for Parents · Double Bed and Mattress: Top Irish Retailers Compared