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
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
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.