The new Pertex® Shield fabric Survival Zone is probably still the best bivvybag in the world due to various simple but effective features.
Firstly it is very lightweight (420g) and packs down to 18cm/7inches taking up virtually no space in your bag. This makes it lighter and less bulky than a standard plastic survival bag!
Made of waterproof Pertex® Shield fabric it is seam sealed and fully waterproof with a simple pull cord allowing you to shut down the breathing hole to 2cms.
The very light material is tougher than it looks and I've used my old Pertex SZ for many years without any issues. Obviously as the bag has a breathable base, it is better that the sleeping mat is placed underneath the bag and not inside. This enable the breathing to take place all around your body, and prolongs its life.
Gore-Tex bags may be three times the price and sometimes four times the weight but I've found they do not work as effectively as this item in sub zero conditons. Practise and understanding UK humidity is the key to an enjoyable night!
Measurements
230cm long and at its widest 75cm. Suitable for someone up to 188cm (6'2") tall.
Colour
Various colours as supplied by Rab! usually Black, blue or purple!! (No green I'm afraid)
Weight: 420g Approx
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