Best double1 / 4
Images: Highlander and its retailers. Used for product identification.
Highlander
Highlander Sleepline 250 Double
A two-person campsite bag for under £40, ISO rated for summer nights.
- Weight
- 2,300 g
- Comfort
- +8 °C
- Packed
- 48 × 29 × 29 cm
Best price found
£36.92
at Wylies Outdoor World · In stock
Prices checked 31 October 2026. We may earn a commission on these links.
- Synthetic fill
Specifications
- Weight
- 2,300 g
- Packed size
- 48 × 29 × 29 cm
- Comfort
- Comfort +8 °C
- Insulation
- 250 gsm hollowfibre
- Season rating
- 2 season
- Shell & zip
- 190T polyester
- Rating Standard
- ISO 23537 rating
- Zip
- Full-length 2-way zip with baffle
- Shape
- Double rectangle
Pros & cons
- Sleeps two for about £37-40 - among the cheapest doubles from a UK brand
- Temperature figures tested to EN ISO 23537-1 per Highlander
- Full-length 2-way zip opens fully as a quilt
- Comfort 8°C / limit 5°C: summer, festival and caravan use only
- 2.3kg and 48 x 29 x 29 cm packed; no written reviews on the maker page
Sources for this product
More synthetic bags
Full comparison →
7 photosBest valueVango
Vango Nitestar Alpha 250
A lab-tested ISO comfort rating of +2 °C for around £40, from the brand on every campsite.
- Weight
- 1.6 kg
- Comfort
- +2 °Climit -4 °C
- Packed
- Not stated by maker
- Synthetic fill
- Draught collar
- Two-way zip
Full specs, 4 retailers →View DealFrom
£39.99
at Norwich Camping & Leisure
Cheapest adult bagMountain Warehouse
Mountain Warehouse Summit 250
A roomy square bag for summer campsites and festivals, often half price.
- Weight
- 1.4 kg
- Comfort
- +5 °Climit 0 °C
- Packed
- 23 × 36 cm
- Synthetic fill
- Two-way zip
Full specs, 1 retailer →View DealFrom
£29.99
at Mountain Warehouse
7 photosWarmestVango
Vango Nitestar Alpha 350
An ISO-rated -1 °C comfort bag for under £50. Heavy at 1.9 kg, so one for the car boot, not the rucksack.
- Weight
- 1.93 kg
- Comfort
- -1 °Climit -7 °C
- Packed
- ≈ 30 × 22 cm, per Attwoolls
- Synthetic fill
- Draught collar
- Two-way zip
Full specs, 4 retailers →View DealFrom
£39.95
at Attwoolls Outdoors

