Best Mountain Warehouse Rectangular Sleeping Bags of 2026

Luke Dobson Avatar
Luke Dobson
Last Updated: 12 Feb 2026

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If you're an avid camper or hiker, you know that a good sleeping bag is essential for a good night's sleep in the great outdoors. The rectangular sleeping bags from Mountain Warehouse offer a comfortable and practical option for your next adventure. With a variety of sizes and colours available, these sleeping bags are suitable for all ages and are made with high-quality materials to ensure durability and warmth. Whether you're camping in the mountains or simply having a backyard sleepover, these sleeping bags are a great choice to keep you snug and cosy throughout the night.

At a Glance: Our Top Picks

Mountain Warehouse Basecamp 250 Sleeping Bag Cover #TOP 1
Mountain Warehouse Basecamp 250 Sleeping Bag
ftb score rating icon 9.8
Mountain Warehouse Summit 250 Sleeping Bag Cover #TOP 2
Mountain Warehouse Summit 250 Sleeping Bag
ftb score rating icon 9.7
Mountain Warehouse Summit Mini Square Sleeping Bag Cover #TOP 3
Mountain Warehouse Summit Mini Square Sleeping Bag
ftb score rating icon 9.5

Top 10 Mountain Warehouse Rectangular Sleeping Bags

Mountain Warehouse Basecamp 250 Sleeping Bag

023156050001
Teal
One Size
Mountain Warehouse Basecamp 250 Sleeping Bag Cover
Mountain Warehouse Sleeping Bag - Basecamp 250 - Camping Spring Summer Season Lightweight Compact - For Spring Summer, Camping & Trekking Teal

The Basecamp 250 Sleeping Bag is designed for comfort during the spring and summer seasons. With an extreme rating of 2°C, it ensures you stay warm in survival situations, while the comfort temperature range of 5°C to 15°C is perfect for a restful night's sleep. Being a 2-season bag, it is ideal for warm nights and indoor use. The hollow fibre insulation provides a cosy feel, making it a great choice for your camping and trekking adventures.

What We Like
Lightweight and compact design
Comfortable mummy shape
Suitable for warm nights
Hollow fibre insulation
Versatile for camping and indoor use
#TOP 2

Mountain Warehouse Summit 250 Sleeping Bag

023159066004
Mountain Warehouse Summit 250 Sleeping Bag Cover
Mountain Warehouse Summit 250 Sleeping Bag - 3/4 Season - Spring Summer, Camping, Holiday, Outdoors Petrol (02) Right Handed Zip - Regular length (200cm)

Features
Comfort Temperature - The Comfort Temperature For This Sleeping Bag Is 5°C/41 Degrees F
3 Season - Cold Nights But Not Freezing, Early Spring & Late Autumn Backpacking Trips And Festivals
Weight (Regular Length) - 1.4kg
Weight (Long Length) - 1.6kg
Rip Stop Fabric - Stop Rips With This Heavy Duty Fabric, Longlasting And Durable
Regular Length - It Measures 200cm. Max User Height 180cm / 5'9"
Packed Diameter - 23cm X 36cm, For Easy And Convenient Use
Limit Temperature - The Limit Temperature Of This Sleeping Bag Is 0°C/32 Degrees F
Insulation - Hollow Fibre Stuffing, Comfortable And Cosy
Envelope Shape - Envelope Sleeping Bags Are Essentially Rectangular, Offering You More Space
#TOP 3

Mountain Warehouse Summit Mini Square Sleeping Bag

023153007001
One Size
Mountain Warehouse Summit Mini Square Sleeping Bag Cover
Mountain Warehouse Summit Mini Square Sleeping Bag - 2/3 Season, Lightweight, Inner Pocket - For Spring Summer, Camping & Trekking Bright Pink One Size

Features
Comfort Temperature - The Comfort Temperature For This Sleeping Bag Is 10°C/50 Degrees F
2 Season - Warm Nights, Summer, Indoor Use
Weight - 1kg
Stuff Sack - A Small Bag Your Sleeping Bag Stuffs Into, Keeping It Compact And Portable
Limit Temperature - The Limit Temperature Of This Sleeping Bag Is 5°C/41 Degrees F
Insulation - Hollow Fibre Stuffing, Comfortable And Cosy
Hood - Draw Cord Closure Lets You Pull The Hood Against Your Face To Retain Body Heat
Envelope Shape - Envelope Sleeping Bags Are Essentially Rectangular, Offering You More Space
Dimensions - 65cm X 160cm
2 Way Zip - For Easy Opening When Ventilation Is Required, They Can Be Full Or Half Length
#TOP 4

Mountain Warehouse Summit 250 XL Sleeping Bag

026202005005
Mountain Warehouse Summit 250 XL Sleeping Bag Cover
Mountain Warehouse Summit 250 XL Sleeping Bag - Lightweight Extra Large, Two Way Zip - Camping Black (XL) Left Handed Zip - Long Length (215cm)

Features
Comfort Temperature - The Comfort Temperature For This Sleeping Bag Is 5°C/41 Degrees F
3 Season - Cold Nights But Not Freezing, Early Spring & Late Autumn Backpacking Trips And Festivals
Rip Stop Fabric - Stop Rips With This Heavy Duty Fabric, Longlasting And Durable
Mummy Shape - Mummy Sleeping Bags Follow Your Body Shape, Giving You A Comfortable Sleep
Limit Temperature - The Limit Temperature Of This Sleeping Bag Is 0°C/32 Degrees F
Insulation - Hollow Fibre Stuffing, Comfortable And Cosy
Inner Pockets - An Inner Storage Space To Keep Your Valuables Safe While You Sleep
Hood - Draw Cord Closure Lets You Pull The Hood Against Your Face To Retain Body Heat
Double It - Zip 2 Of These Bags Together To Create A Double Sleeping Bag
2 Way Zip - For Easy Opening When Ventilation Is Required, They Can Be Full Or Half Length
#TOP 5

Outwell Celebration Lux 4ºc Long Sleeping Bag

230361
One Size
Outwell Celebration Lux 4ºc Long Sleeping Bag Cover
Outwell Celebration Lux 4ºc Sleeping Bag Long

The Outwell Celebration Lux Sleeping Bag is designed for comfort and warmth. Its rectangular shape offers plenty of space for you to move around while you sleep, ensuring a restful night. The vibrant red colour makes it a stylish choice for camping trips. With a temperature rating of 4ºc, you can enjoy a cosy sleep even in cooler conditions, making it perfect for various outdoor adventures. This sleeping bag caters to your needs by providing both functionality and a touch of flair.

What We Like
Spacious rectangular design
Stylish red colour
Comfortable in 4ºc temperatures
Convenient for outdoor adventures
#TOP 6

Mountain Warehouse Summit 250 Sleeping Bag

023158024005
Mountain Warehouse Summit 250 Sleeping Bag Cover
Mountain Warehouse Summit 250 Sleeping Bag - 3/4 Season Insulated & Mummy Shaped Bag - For Spring Summer, Camping & Trekking Grey Left Handed Zip - Long Length (215cm)

Features
Comfort Temperature - The Comfort Temperature For This Sleeping Bag Is 5°C/41 Degrees F
3 Season - Cold Nights But Not Freezing, Early Spring & Late Autumn Backpacking Trips And Festivals
Weight (Regular Length) - 1.4kg
Weight (Long Length) - 1.6kg
Rip Stop Fabric - Stop Rips With This Heavy Duty Fabric, Longlasting And Durable
Regular Length - It Measures 200cm. Max User Height 180cm / 5'9"
Packed Dimensions - 22cm X 40cm
Mummy Shape - Mummy Sleeping Bags Follow Your Body Shape, Giving You A Comfortable Sleep
Limit Temperature - The Limit Temperature Of This Sleeping Bag Is 0°C/32 Degrees F
Insulation - Hollow Fibre Stuffing, Comfortable And Cosy
#TOP 7

Mountain Warehouse Basecamp 200 Double Sleeping Bag

026194050001
Teal
One Size
Mountain Warehouse Basecamp 200 Double Sleeping Bag Cover
Mountain Warehouse Basecamp 200 Double Sleeping Bag - 2/3 Season Camping Bag, Insulated Mattress Teal

Features
2/3 Season - Cooler Nights Spring & Autumn. Perfect For Festivals, Indoor And Backpacking Trips
Comfort Temperature - Women Of Average Size And Build Can Expect To Sleep Comfortably
Insulation - Hollow Fibre Stuffing, Comfortable And Cosy
Great For Summer Nights - Ideal For Warm Weather Camping Trips
Dimensions - 193cm X 137cm
#TOP 8

Mountain Warehouse Sleeping Bag - Basecamp 250

023156006001
Blue
One Size
Mountain Warehouse Sleeping Bag - Basecamp 250 Cover
Mountain Warehouse Sleeping Bag - Basecamp 250 - Camping Spring Summer Season Lightweight Compact - For Spring Summer, Camping & Trekking Blue

Features
Comfort Temperature: 5°C To 15°C - The Minimum Temperature That A Sleeping Bag Is Designed For
Extreme Rating - Can Be Used In 2°C, This Is A Survival Temperature Only
Mummy Shape - Mummy Sleeping Bags Follow Your Body Shape, Giving You A Comfortable Sleep
Insulation - Hollow Fibre Stuffing, Comfortable And Cosy
2 Season - Warm Nights, Summer, Indoor Use
#TOP 9

Mountain Warehouse Summit 250 Sleeping Bag

023158066004
Mountain Warehouse Summit 250 Sleeping Bag Cover
Mountain Warehouse Summit 250 Sleeping Bag - 3/4 Season Insulated & Mummy Shaped Bag - For Spring Summer, Camping & Trekking Petrol Right Handed Zip - Regular length (200cm)

Features
Comfort Temperature - The Comfort Temperature For This Sleeping Bag Is 5°C/41 Degrees F
3 Season - Cold Nights But Not Freezing, Early Spring & Late Autumn Backpacking Trips And Festivals
Weight (Regular Length) - 1.4kg
Weight (Long Length) - 1.6kg
Rip Stop Fabric - Stop Rips With This Heavy Duty Fabric, Longlasting And Durable
Regular Length - It Measures 200cm. Max User Height 180cm / 5'9"
Packed Dimensions - 22cm X 40cm
Mummy Shape - Mummy Sleeping Bags Follow Your Body Shape, Giving You A Comfortable Sleep
Limit Temperature - The Limit Temperature Of This Sleeping Bag Is 0°C/32 Degrees F
Insulation - Hollow Fibre Stuffing, Comfortable And Cosy
#TOP 10

Mountain Warehouse Microlite 500 Square Sleeping Bag

024194125004
Mountain Warehouse Microlite 500 Square Sleeping Bag Cover
Mountain Warehouse Microlite 500 Square Sleeping Bag - 2/3 Season Camping Bag with Inner Pocket - For Spring Summer, Festivals & Outdoors Dark Blue Right Handed Zip - Regular length (200cm)

Features
Comfort Temperature - The Comfort Temperature For This Sleeping Bag Is 10°C/50 Degrees F
2 Season - Warm Nights, Summer, Indoor Use
Regular Length - It Measures 200cm. Max User Height 180cm / 5'9"
Padded Insulation - Microfibre Filling Provides Excellent Heat Retention, A Synthetic Alternative To Down
Packed Dimensions - 14cm X 35cm
Long Length - It Measures 215cm. Max User Height 195cm / 6'4"
Limit Temperature - The Limit Temperature Of This Sleeping Bag Is 5°C/41 Degrees F
Inner Pockets - An Inner Storage Space To Keep Your Valuables Safe While You Sleep
Envelope Shape - Envelope Sleeping Bags Are Essentially Rectangular, Offering You More Space
2 Way Zip - For Easy Opening When Ventilation Is Required, They Can Be Full Or Half Length
Buying Guide Image
Editor's Notes

During our Mountain Warehouse rectangular sleeping bag research, we found 11 Mountain Warehouse rectangular sleeping bag products and shortlisted 10 quality products. We collected and analyzed 3,211 customer reviews through our big data system to write the Mountain Warehouse rectangular sleeping bags list. We found that most customers choose Mountain Warehouse rectangular sleeping bags with an average price of £20.00.

The Mountain Warehouse rectangular sleeping bags are available for purchase. The top 10 picks range in price from a low of £20.00 to a high of £38.00, find the one that fits your budget.

Written by
Luke Dobson Avatar

Luke is a runner, a climber, hiker, hunter, and a lot more. Luke Dobson is Celtic-born and has lived most of his life in Scotland. However, his sporting endeavours have taken him to several countries around Europe. He serves as a tour guide for countless companies and owns a couple of gyms and recreational centres in Scotland. Luke Dobson is proficient in 7 different languages. He maintains many sport article columns where he shares his wealth of experience in the sport industry.