11% off RRP save £25.05

Outdoor Research Helium Bivy

£199.95 RRP £225.00

free uk deliveryNext working day UK* delivery

Updated for 2022! Now even lighter!

The Helium Bivy is Outdoor Research's (and our) lightest, best-selling, and most awarded bivy sack of all time. Incredibly quick to set up and breakdown, the ultralight Helium Bivy is 14% lighter than its last generation, and has everything the outdoor minimalist needs to be comfortable. Thru-hikers and bikepackers love the Helium for its refined footprint and reduced weight, and trust it for its durable, lightweight, waterproof Pertex Diamond Fuse technology. A clamshell opening makes it easy to get in, get out, and resists wear and tear for future seasons of adventuring to come. This is the ideal shelter for minimalists who are looking to trade weight for speed, agility, and performance.

Ultralight comfort, yet quick to set up and break down - the perfect combination!

Pertex developed Diamond Fuse technology as a unique way of improving the durability and abrasion resistance of fabrics without adding any unnecessary weight. Diamond Fuse fabrics use yarns with unique diamond shaped filaments that lock together to create a durable and highly abrasion resistant fabric. This engineered structure allows Diamond Fuse fabrics to remain very stable over extended wear and washing.

  • Outer: Bluesign approved Pertex Shield Diamond Fuse 2.5L 100% Nylon, 30D Ripstop
  • Inner: Bluesign approved 100% Polyester Mesh
  • Floor: 100% Nylon, 40D with TPU lamination
  • Waterproof, breathable, ultralight & fully Seam-Taped
  • No-See-Um Mesh
  • Single-Pole System
  • Reflective Logo and Trims
  • Two Stake Loops
  • One Guy Line Loop
  • High Volume Toe End
  • Clamshell Opening
  • Two Internal Fly Fasteners
  • Dimensions: 208 x 66cm (narrows to 48cm at foot end)
  • Pack Size: 31cm x 9cm
  • Weight: 448g with pole, 400g without
  • Outdoor Research Helium Bivy

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 2021 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: 511849

Supplier Code: 287809-0008

Just £1.95 UK Delivery - Free over £50
Size Colour Stock
One Size Classic Blue 29 in stock(29 in stock)
One Size Pewter 37 in stock(37 in stock)
Order before 3pm for next working day delivery.
4.9 98% positive
  • Goods arrived on time, great price
    October 28, 2021
  • Very quick delivery. Ordered with free delivery on Friday pm. Goods arrived on Saturday am. Everything as promised.
    October 27, 2021
  • Very good prompt service.
    October 27, 2021
  • October 26, 2021
  • Good service
    October 26, 2021
  • Very competitively priced product. Eixcellent service. Delivered the day after the order was made.
    October 26, 2021
  • Always effortless shopping, very quick delivery and competitive prices.
    October 26, 2021
  • Excellent
    October 25, 2021
  • Very good, best on-line prices and rapid next day delivery, excellent company!
    October 25, 2021
  • I knew what Iwanteed. They had itinstock. I ordered. They delivered. What's more to want?
    October 24, 2021

3,430 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)