23% off RRP save £90.17

Marmot Helium

£299.83 RRP £390.00

free uk deliveryNext working day UK* delivery

Remarkably light and compact, the Helium 15C Sleeping Bag delivers impressive insulation during three-season backpacking and mountaineering treks. Featuring Pertex Microlight on the exterior, its lofty 800-fill-power-down insulation and water-resistant Down Defender treatment will keep you warm and dry. After an epic day on the mountain, give your feet a rest in the roomy wrap-around footbox. Smooth, curved baffles help keep the fill in place, while the nautilus multi-baffle hood with a drawcord, snagless insulated draft tube, and full-length, two-way zipper with a zip-guard slider limit heat loss. If the interior gets too warm, use the fold-down secondary zipper to get some air. Tuck small items into the internal stash pocket.

  • Fold-Down Second Zipper Provides added Ventilation
  • Certified 800+ Fill Power Goose Down
  • Ultralight Pertex Quantum 20d 100% Nylon Ripstop DWR 1.03 oz/sqyd
  • Full Length Locking YKK Two Way Zipper with Zip-Guard Slider
  • Down Defender to Improve Water-Resistance in Wet Conditions
  • Nautilus Multi-Baffle Hood
  • Internal Stash Pocket
  • Snagless Insulated Draft Tube
  • Hood Draw Cord
  • Two Way Zipper Sliders
  • Zipper Garage
  • Stretch Tricot Baffles
  • Two Hang Loops
  • Stuff and Storage Sack Included
  • Marmot Helium

Delivery Charges

Just £1.95 next working day UK delivery - Free on orders over £50

Delivery Times Explained

In Stock 2 day deliveryNext working day delivery - stock is available from our warehouse and will normally be despatched the same day if you order by 3pm.

All items are sent on a next working day service (large/expensive items DPD Monday-Friday, smaller items Royal Mail Monday-Saturday). If you require Saturday delivery on larger/more expensive items (over about £50) there will be an additional charge, please give us a call for a quote.
Northern Ireland, Highlands and Islands will take 2 working days.

On OrderOn order - Please call to check availability

Delivery Method

Small items may be sent by Royal Mail 24h, larger or more expensive items with DPD Next Day may require a signature on delivery. In the event that no one is available, the parcel will be taken to your local depot and a note will be left with instructions for redelivery.

Detailed delivery information and international rates

Our Guarantee

Our "no quibbles" guarantee means that if for any reason you are unhappy with the item you have purchased just return it in its original condition within 28 days and we will issue a full refund or exchange.

Christmas Returns

Items purchased between 1st November and 25th December can be returned anytime until the 31st January 2020 as part of our extended Christmas guarantee! Normal terms and conditions apply

FAQs and more information on returns and exchanges

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Our Code: 524758

Supplier Code: 900422 2958

Just £1.95 UK Delivery - Free over £50
Size Colour Stock
One Size Cobalt Blue 8 in stock(8 in stock)
Order before 3pm for next working day delivery.
4.9 98% positive
  • August 16, 2020
  • August 16, 2020
  • August 16, 2020
  • As easy as any where else for shopping online. Delivery fantastic. Gear exactly as described. I'll be back.
    August 16, 2020
  • Very easy and quick website to use with brilliant service would recommend them
    August 15, 2020
  • August 15, 2020
  • Very quick response and quick delivery. Very pleased will definitely shop there again. Thanks
    August 15, 2020
  • 10 out of 10 luv the product swiftly delivered thank you
    August 15, 2020
  • Good prices, very efficient service. Goods arrived next day as promised
    August 15, 2020
  • Best​ online purchase experience I've had.
    August 14, 2020

2,471 reviews since June 2017

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£1.95 Next working day UK* delivery - Free on orders over £50 - Order before 3pm - (*2 working days for Highlands, Islands and Northern Ireland)