Mountain Equipment Helium 400 Women's Sleeping Bag

Mountain Equipment Helium 400 Women's Sleeping Bag

Regular Price: £250.00

Special Price £175.00 save 30%

Incl. 20% Tax

Availability: Out of stock

When space is in short supply, the Helium down sleeping bag is the perfect solution for a good night's sleep.



Mountain Equipment Helium 400 Women's Sleeping Bag

When space is in short supply, the Helium down sleeping bag is the perfect solution for a good night's sleep.

An incredibly light, versatile and packable sleeping bag well suited to backpacking and cycle touring, that will still happily cope with cooler nights during the spring and summer months. The Helium 20™ outer shell is very light and highly breathable and the bag is stuffed with pure duck down with a minimum fill power of 700.

  • Weight: 845g
  • Fill Weight: 367g
  • Fill: 90-10 pure duck down with a minimum fill power of 700
  • Good night's sleep guaranteed: -3°C/27°F
  • Comfort: 3°C/37°F | Comfort limit: -3°C/27°F | Extreme: -19°C/-2°F
  • Packed Size: 23 x 19 x 17cm
  • Alpine Fit with zoned EXL system maximises thermal efficiency
  • Slanted box wall baffles throughout
  • Mid-level side seams
  • 5 baffle anatomically shaped hood
  • 4 baffle anatomically shaped and offset foot-box
  • Full length Gemini™ zip baffle and integrated collar with Lode Lock™ closure
  • Supplied with a waterproof roll-top stuff-sack and storage cube
  • Mountain Equipment is a member of the Fair Wear Foundation


Activities Camping, Travel
Weight 845g
Dimensions 23 x 19 x 17 cm (packed)
Brand Mountain Equipment
Colour Blackberry
Gender Female
Season Rating 3 Season
Zip Left Zip
Comfort Temperature (°C) 3°C
Limit Temperature (°C) -3°C
Extreme Temperature (°C) -19°C
Length (cm) 180
Insulation Type Down
Insulation 700 Fill Power 90/10 Duck Down



We try to keep the site updated with products that are in stock and despatch within 1-2 working days (Mon-Fri). Occasionally items ordered may be out of stock. If this should happen we will contact you to let you know when we will be able to despatch your order. Please note that all deliveries are made between 08.00 and 18.00 Monday to Friday and may require a signature.

Free Delivery

Orders are typically despatched with Royal Mail Tracked 48. Please note that this is a guideline only as a different delivery method may be used depending on the size/weight of your order – if you would like any more information on your delivery please contact us. Please note that postal services are dealing with unprecedented numbers of orders just now; there may be a short delay in delivery but we will get your order to you as quickly as we can.

Click and Collect

At checkout, please let us know you'd like to collect your order from our Hathersage store, either in the Comments box on the order page or by emailing us at [email protected], quoting your order number. Click and Collect items are available to pick up Monday – Friday, 9:00 am – 5:00 pm (excluding Bank Holidays), one working day after your order is confirmed.

When your item is ready to collect, you will receive a confirmation email; please either bring a print out of this or show us the email on your phone. You will also need to bring a form of ID which shows the billing address for your order.

Please collect from the back door at the end of Outside's customer car park:

Outside Ltd
Main Street
S32 1BB

Online Only Range

“Online only” products are not available for immediate despatch but you will still normally receive these items within 5-7 days of placing an order. If there are likely to be any further delays we will of course be in touch. These products cannot be purchased in our store.

Next Day Delivery - £5.95

Orders placed BEFORE 2pm Mon-Fri will be despatched the same day, usually with Parcelforce (requiring a signature). Any Next Day orders received after this time will be despatched the following working day. Please note any orders placed AFTER 2 PM on Thursdays will be despatched on Friday, but not delivered until the following week. Next Day isn't possible on Bank Holidays. If you have a mobile number on your account you will receive SMS notifications regarding delivery (UK mainland deliveries only).

Redirection of your order once despatched

We regret to say that we are unable to change the address or postcode on a parcel once it has been despatched. We therefore recommend that you check your delivery address and postcode carefully before completing the order as this will not be checked by us before despatch. We also recommend that orders are sent to an address where someone will be available all day to receive the parcel, e.g. a work address.

European and International Delivery

International service suspended

Unfortunately international orders are temporarily suspended due to the impacts of Coronavirus and Brexit related regulations. We are working to restore normal service when we can - please email [email protected] if you would like an update when we resume international services. Please accept our apologies for any inconvenience.


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