Best all-rounder1 / 8
Images: Mountain Equipment and its retailers. Used for product identification.
Mountain Equipment
Mountain Equipment Klimatic III
Recycled Polarloft insulation with a genuine +1 °C ISO comfort rating at 1.2 kg.
- Weight
- 1,220 g
- Comfort
- +1 °Climit -5 °C
- Packed
- 25 × 22 × 21 cm
Best price found
£129.99
at Ultralight Outdoor Gear · In stock · RRP £149.99
- AlpinetrekIn stock£154.80View Deal
- Mountain EquipmentIn stock£160View Deal
- Cotswold OutdoorOut of stock at check£180View Deal
Prices checked 31 October 2026. We may earn a commission on these links.
- Synthetic fill
- Recycled fabrics
- Full-length zip
Specifications
- Weight
- 1,220 g (ME size guide lists 940 g)
- Packed size
- 25 × 22 × 21 cm
- Comfort
- Comfort +1 °C / limit -5 °C
- Insulation
- 90% recycled POLARLOFT synthetic insulation, wave-layer…, 440 g
- Season rating
- 3 season, per UK retailers
- Shell & zip
- 100% recycled 20D shell and lining fabric
- Rating Standard
- ISO 23537 rating
- Zip
- Left zip (Regular and Long) or right zip (Regular)
Pros & cons
- 'temperature-wise, the Klimatic III is impressive' - comfort 1°C / limit -5°C suits three-season use in many…
- standout sustainability and stays warm when damp
- easily compressed, adjustable hood, full-length zip, good price/performance
- not ultralight and bulkier than a down equivalent
- Weight and pack size figures conflict between ME's own page sections and retailers
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
