Enter the Mobile Mummy from Sierra Designs, which once I describe what it is, you will understand the slightly unusual name. I have been using this in the colder months since last autumn.

What Sierra Designs say:

  • Made for wearable comfort: the jacket hood moves with you when you roll around and turn your head.
  • Zipper-less arm ports are ready for instant use.
  • Hood, zipper and arm ports all have reinforced draft tubes to prevent cold air from sneaking in.
  • Long zipper runs down the centre of the bag and allows easy entry and exit.

I haven’t been a fan of the standard Mummy style sleeping bag for many years. Whilst I appreciate that they can be thermally efficient, I always seem to end twisted up in the models I have slept in over the years.

More recently, the options of ‘sleeping systems’ including quilts and roomy sleeping bags mean that twisted up sleep experience can be a thing of the past.

Enter the Mobile Mummy from Sierra Designs, which once I describe what it is, you will understand the slightly unusual name.  I have been using this in the colder months since last autumn.

The Mobile Mummy is a wearable lightweight sleeping bag. You can walk around in this if you want to, hence Mobile Mummy by unzipping the foot box  and hitching it up by toggles on the side.  This may seem a bit of a novelty aspect and probably is for me, but the real benefits of this sleeping bag lie to my mind, elsewhere in its design.

I found the full length centre zip, with its excellent baffle and anti snag material behind the zip very practical.

The zipper-less arm ports mean I can cook, make a brew and read with ease, while being completely snug and warm in a way that you couldn’t do with an ordinary sleeping bag. Once I slipped my arms back into the bag, the arm port cleverly closed without resulting to zips and no drafts were observed.

With the bag shaping around my shoulders and the well designed hood, the Mobile Mummy stayed in the same position whether I was sleeping on my back, side or front. Those middle of the night trips are easy with the centre zip, as well as for venting, if I got too hot in the night.

The comfort rating for men is -3C, over the last year, I have remained toasty warm down to around 1C in this highly practical and comfortable sleeping bag and maybe like me, you won’t want to get out of it in the morning!

If you are struggling for ideas or can't find that perfect combination, please reach out to me in the usual places - @valleyandpeakuk on Instagram, @ValleyandPeak on Twitter, ValleyandPeak on Facebook or on support@valleyandpeak.co.uk for email.

Mark - Valley and Peak

October 24, 2022 — Jim De'Ath
Tags: Reviews