PakLite Flow 1 Down Sleeping Bag

Part of our new collection of lightest-ever sleeping bags. A hoodless design, our lightest fabric, 950 fillpower down, and zero down in the base (your sleeping mat provides ground insulation) mean extreme lightness and a tiny pack size. 16 sizes for a perfect fit.

Typical Operating Temperature
Guideline minimum temperature. Sleeping Bag TOT: you should get a night’s sleep, under normal circumstances. Clothing TOT: you should feel warm enough, assuming low/moderate activity. Sleep System TOT: relates to full system. For more details, see our Technical Briefing.
12°C / 53.6°F
Weight
For clothing, weight is for size: M. For sleeping bags, weight changes with selected length/width. N.B. there may be some variation in the weights of finished products.
165g / 6oz
Price
£360.00
PakLite Flow 1 Down Sleeping Bag
Size
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Features

  • Whisper-light Vertex fabric inner and outer (18g/m2)
  • Rare 950 fillpower European goose down
  • Down filled top and foot-piece
  • Box wall construction for maximum loft
  • Zero down in base for lightness
  • Shoulder-length/hoodless for weight saving and comfort
  • Footpiece: Ovoid shape for comfort
  • Stuff sac and storage bag supplied
  • Packed size 13 x 21cm*
  • Options:
    • Short, Long, and XL lengths
    • Slim, Wide, and Extra Wide widths*

* Please note: we make our stuff sacs big enough to allow fairly easy stuffing rather than reducing the vest to the tightest minimum.

Description:

The PakLite Flow 1 is part of our new collection of lightest-ever sleeping bags. A hoodless design, our lightest fabric, 950 fillpower down, and zero down in the base (your sleeping mat provides ground insulation) mean extreme lightness and a tiny pack size. 16 sizes for a perfect fit.

Only available during June 2025.

Our superb quality 950 fillpower down is used in box-wall constructed chambers in the top (and sides) of the bag and in the foot piece to create exceptional weight-to-warmth performance. 

A hoodless design, zero down in the base (your sleeping mat provides ground insulation), and whisper-light Vertex, the lightest of all our fabrics at an incredible 18g/m2, help achieve extreme lightness and tiny pack size. The lightness of the Vertex fabric also allows increased lofting of the superb 950 European goose down. 

The hoodless design not only saves weight but will also appeal to people who appreciate a less enclosed feeling around the head.

Ultralight sleeping bags are not only for the racers and lightweight trekkers! A light weight and a small pack size is a big advantage to anyone who has limited pack space and wants to lighten their load.

Made to order in our UK workshop, this bag can be built in 16 different sizes so that you can have the perfect fit, giving you the best possible performance at the lightest weight.

Note: this performance of this bag depends on adequate insulation from your sleeping mat.

 

Part of the Summer Lightning Collection

Summer Lightning is a short-term opportunity to lay your hands on unique kit. This extraordinary gear is only available for such a short time because in summer we have a little breathing space to put some of our best ideas into practice, to turn possibilities into actual equipment. If you want us to make you one; order while you can! Only available during June!

Ultralight Vertex fabric (weight: 18 gsm)

Breathtakingly light at 18 gsm, Vertex is the ultimate in technical fabrics for extreme weight saving. This fabric is down-proof and superbly wind-proof and represents a high-point in the development of lightweight technical fabrics. The result of years of evolution and testing, this whisper-light fabric opens up new possibilities at the pinnacle of lightweight gear design

950 fillpower down

A newcomer to our range. European goose of rare quality. A high value alternative at the top levels of performance. More on our down insulation.

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