Best Sleeping Bag | UK 2025

Find the best sleeping bag in the UK through our selection of thoroughly reviewed products. All sleeping bags here can be used for hiking or comfort camping and have a stated temperature rating suitable for conditions in the UK. To get to our results, we looked at almost one hundred different products and selected the best sleeping bags in each key category. We have assessed and provided comprehensive reviews of our top contenders for you to better decide on what sleeping bag to buy. Access them via the ‘Read Full Review’ buttons below. Need somewhere to sleep? Check out our list of best backpacking tents.

Updated 1st August 2025

Sleeping Bag Reviews UK

Western Mountaineeing Ultralite -7

Price At Time Of Writing | £625.00


Overall Rating | 94

Comfort | 9

Construction | 9

Features | 8

Size/Weight | 10

Versatility | 8


Packed Size - 33x18cm

Weight - 820g

Fill - 850+ Goose Down


Pros - Lightweight, warm, not too bulky

Cons - Limited ventilation and comfort

Overall - A great, weight-saving and packable sleeping bag

Sea to Summit Spark Pro -9

Price At Time Of Writing | £509.99


Overall Rating | 92

Comfort | 9

Construction | 9

Features | 8

Size/Weight | 9

Versatility | 7


Packed Size - N/A

Weight - 791g

Fill - 950-fill Ultra-Dry Down


Pros - Lightweight, warm, features-heavy

Cons - Expensive and the lightweight fabric requires careful handling

Overall - A top-tier sleeping bag that delivers on performance, comfort and durability

Mountain Hardwear Phantom

Price At Time Of Writing | £373.90


Overall Rating | 91

Comfort | 8

Construction | 9

Features | 8

Size/Weight | 8

Versatility | 9


Packed Size - 18.5x21.5cm

Weight - 1.18kg

Fill - 800 French Fat Grey Goose Down


Pros - Packs small, warm with draft collar attachment, waterproof

Cons - Expensive, mummy shape may not suit some people

Overall - High-quality bag offering warmth and low weight

Rab Mythic Ultra 120

Price At Time Of Writing | £349.99


Overall Rating | 90

Comfort | 8

Construction | 9

Features | 8

Size/Weight | 10

Versatility | 5


Packed Size - 32x16cm

Weight - 330g

Fill - 900-Fill Power European Goose Down


Pros - Lightweight, warm

Cons - Less versatile, mummy shape, half-length zipper

Overall - A sleeping bag for weight-conscious adventurers

The North Face Blue Kazoo

Price At Time Of Writing | £346.82


Overall Rating | 90

Comfort | 8

Construction | 8

Features | 7

Size/Weight | 10

Versatility | 7


Packed Size - 43x23cm

Weight - 1.1kg

Fill - 700g ProDown


Pros - Good warmth distribution, lightweight

Cons - Narrow foot space

Overall - Good for hiking, lightweight

Mountain Hardwear Phantom

Price At Time Of Writing | £650.00


Overall Rating | 90

Comfort | 9

Construction | 8

Features | 8

Size/Weight | 8

Versatility | 7


Packed Size - 21x42cm

Weight - 1.22kg

Fill - 850-fill Goose down


Pros - Very warm, lightweight, good compression

Cons - No hydrophobic treatment on down fill

Overall - Ideal for a bit of extra warmth at a reasonable weight

Therm-a-rest Hyperion 20

Price At Time Of Writing | £335.75


Overall Rating | 89

Comfort | 6

Construction | 9

Features | 9

Size/Weight | 10

Versatility | 5


Packed Size - 15.24x20.32cm

Weight - 22 ounces

Fill - Nikwax goose down


Pros - High quality construction and fill, extremely lightweight

Cons - Expensive, not as warm as others, tight-fitting design

Overall - The best lightweight option for long hikes in warmer conditions

Big Agnes Torchlight 20

Price At Time Of Writing | £299.99


Overall Rating | 89

Comfort | 8

Construction | 8

Features | 7

Size/Weight | 8

Versatility | 8


Packed Size - 44x20cm

Weight - 1.02kg

Fill - 850-Downtek Water-Repellent Down


Pros - Roomy, adjustable, comfortable, water-resistant down

Cons - Slightly heavy for ‘ultralight,’ zippers can snag, awkard internal pocket placement

Overall - A three-season sleeping bag for restless sleepers who want warmth without feeling confined

Kelty Cosmic Ultra 20F sleeping bag

Kelty Cosmic Ultra 20F

Price At Time Of Writing | £199.99


Overall Rating | 88

Comfort | 8

Construction | 7

Features | 7

Size/Weight | 7

Versatility | 9


Packed Size - ‎35.56x19.05cm

Weight - ‎1.09kg

Fill - 800-fill DriDown


Pros - Good water-resistance, comfortable, warm

Cons - Slightly bulky, provided stuff sack too big

Overall - A great versatile choice for most adventuring

Rab Neutrino 800 sleeping bag

Rab Neutrino 800

Price At Time Of Writing | £510.00


Overall Rating | 84

Comfort | 7

Construction | 7

Features | 6

Size/Weight | 8

Versatility | 6


Packed Size - 24x33cm

Weight - 1.29kg

Fill - 800-fill Goose down


Pros - Compresses down to a small package, good warmth for the weight

Cons - Expensive

Overall - A great choice for lower-temperature hiking

Sea to Summit Trek Down -9

Price At Time Of Writing | £339.90


Overall Rating | 83

Comfort | 7

Construction | 8

Features | 6

Size/Weight | 7

Versatility | 5


Packed Size - N/A

Weight - 1.44kg

Fill - 650-Fill Duck Down


Pros - Spacious, comfortable, adaptable

Cons - Not ultralight or compact, minor down leakage, slightly fussy zipper system

Overall - Great sleeping bag for car campers and moderate backpackers

Big Agnes Sidewinder SL 20

Price At Time Of Writing | £300.05


Overall Rating | 80

Comfort | 7

Construction | 7

Features | 6

Size/Weight | 4

Versatility | 6


Packed Size - 20x44cm

Weight - 1.02kg

Fill - 650 DownTek™ and FireLine™ Eco


Pros - Perfect for side sleepers, warm, roomy

Cons - Down shedding, not for back sleepers

Overall - A backpacking tent for cold conditions

Overall Results

Afterword

Sleeping bags are a basic essential when going on outdoor adventures. Whether you are hiking or camping, the selection on this page will guide you through choosing the best sleeping bag in the UK. Have a new product you’d like us to review? Hit up our contact page and send us specific product suggestions. We’d love to hear from you!

About Our Testing Process

Here at The Equipment Guide, we write reviews for the UK with the goal of providing a genuine personal assessment of the best products.

All products are reviewed and ranked in a methodical and careful manner and we assess them on relevant key features. We do not accept free products from manufacturers.

Our mission is simple: To create the UK’s best outdoor gear reviews.