Overbags & Filler Bags

Boost the performance of your sleeping bag to way beyond its imagined limits. With PHD's innovative Fillers & Overbags, you can create your own hardworking, versatile Sleep System to take you from high summer to deep winter, from UK hills to Himalayan peaks.

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From £406.00 240g +15℃
A lightweight liner that boosts your sleeping bag's warmth by 10°C. On its own, the lightest of sleeping bags. A PHD 'K Series' product: warmth to weight at the limit of possibilities.
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From £406.00 240g 15℃
Ready made version of this lightweight liner that boosts your sleeping bag's warmth by 10°C. Ships within 5 working days.
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From £658.00 480g 0℃
Our lightest-ever Overbag, boosting your sleeping bag's warmth by 20°C. A 0°C sleeping bag in its own right.
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From £845.00 710g -6℃
Warmth to weight taken to the limit. 'K Series' version of a bag used to boost the warmth of your existing sleeping bag by 24°C. Can be used as a stand-alone too.
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From £489.00 780g -5℃
Used in combination with your lightweight Minim bag to boost its warmth by 23°C. A roomy stand-alone bag in its own right too.
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From £585.00 940g -5℃
A Semi-Rectangular Down Overbag to fit over our Icelandic or Greenlandic bags to boost their warmth by an additional 23°C. A -5°C sleeping bag in its own right.
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From £666.00 900g -6℃
Used in combination with your lightweight Hispar bag to boost its warmth by 24°C. A roomy stand-alone bag in its own right too.
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From £334.00 590g 15℃
An insulated bivvy bag / sleeping bag cover to protect and boost the warmth of a down sleeping bag, increasing its warmth by a further 10°C while keeping off the muck and damp of the bivouac.
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From £436.00 870g -4℃
Used in combination with your Zeta bag to boost its warmth by 24°C. This specialised Primaloft-filled overbag is also cut to fit over our Ultra K, Minimus and Minim 400 down sleeping bags.
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From £404.00 1050g
Synthetic-filled overbag for long Arctic expeditions. To protect and boost your down-filled expedition bag.
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