Mountain Equipment
SKU:5053817253058
Mountain Equipment Helium 250 Sleeping Bag (1°C/34°F)
Mountain Equipment Helium 250 Sleeping Bag (1°C/34°F)
The Mountain Equipment Helium 250 Sleeping Bag is made from 100% recycled Helium 20D outer shell, making it extremely light and highly breathable.
Weighing less than most bottles of water and packing down equally small, this 261g of 90-10 Pure Duck Down with a minimum fill power of 700 is the perfect bag for the dedicated warm-weather backpacker looking to lighten their load.
Features
- 100% recycled Helium 20D outer shell is very light and highly breathable with PFC-free DWR
- 261g of 90-10 Pure Duck Down with a minimum fill power of 700
- Alpine Fit 2.0 improves comfort and maximises thermal efficiency
- Slanted box-wall baffles and stitch-through baffles
- Mid-level side seams
- 5 baffle anatomically shaped hood
- 4 baffle anatomically shaped and offset foot-box
- Full-length Gemini zip baffle with 140cm zip and integrated neck collar with Lode Lock closure
- 100% recycled Supersoft 20D lining fabric with PFC-free DWR
- Supplied with waterproof roll-top stuff-sack and storage cube
- 100% Polyamide outer/inner, Down fill
Specifications
Regular | Long | |
Weight | 660g / 23.3oz | 680g / 24oz |
Standard Pack Size | 19cm x 17cm x 15cm | 19cm x 17cm x 15cm |
Good Night's Sleep Temperature | 1°C/34°F | 1°C/34°F |
Material | 100% Polyamide outer/inner, Down fill |

Technology
![]() |
Down 700 |
![]() |
Helium |
![]() |
Down Codex® |
![]() |
Fair Wear |
Detail Shots
![]() |
Using slanted box-wall baffles throughout the entire main body of the helium bags means weight is removed from the bags structure, yet they remain a significant step above a standard box baffle. |
![]() |
5 baffle anatomically shaped hood. |
![]() |
4 baffle anatomically shaped and offset foot-box. |
![]() |
Full length Gemini zip baffle with 140cm zip and integrated neck collar with Lode Lock closure. |
![]() |
100% recycled HELIUM 20D outer shell is very light and highly breathable with PFC free DWR. |
![]() |
Integrated neck collar with Lode Lock closure. |
More Information
Helium Sleeping Bags
Efficiently sized, supremely comfortable, and low in weight each Helium bag offers outstanding all-round performance for backpackers, cycle-tourers, and trekkers. These bags don’t skimp on features and will keep you warm and comfortable whether on a summer road-trip or an extended trek.
Shop The Helium Range
Sleeping Bag |
Good Night's Sleep Rating |
Helium Solo | 7°C/45°F |
Helium 800 | -16°C/3°F |
Helium 600 | -10°C/14°F |
Helium 400 | -5°C/23°F |
Helium 250 | 1°C/34°F |
Video






