Overbags & Filler Bags
Combine with down clothing and / or your existing sleeping bag to create a versatile, lightweight, and economical sleep system.
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.
Our lightest-ever Overbag, boosting your sleeping bag's warmth by 20°C. A 0°C sleeping bag in its own right.
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.
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.
Ready made version of this lightweight liner that boosts your sleeping bag's warmth by 10°C. Ships within 5 working days.
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.
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.
Synthetic-filled overbag for long Arctic expeditions. To protect and boost your down-filled expedition bag.
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.
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.