The Snugpak Special Forces Bivvi is a lightweight, compact, basic but functional Bivvi bag ideal for long distance trekking with overnight stops where space and weight are at a premium.
The Special Forces is a simple 100% nylon bag treated with a DWR to make it waterproof, with an easy access half zip to aid getting in and out of the bag and a draw string operated hood.
The main positives in this bags favour are the low weight (340g) and small pack size (14x10cm) which makes it hardly noticeable in your pack.
SnugPak's Paratex material is reasonable quiet while inside the bag and the claims of breathability seem to hold true with the bag being completely free of condensation in the morning.
The half zip makes for easy access and egress from the bag, it's fairly roomy inside for a clothed man in sleeping bag but lacks enough space to have a sleeping mat in with you.
The draw cord in the hood is pretty poor and cinching it tight up around your face in bad weather from inside the bag is extremely difficult and therefore it would be recommended to use in conjunction with a small lightweight tarp to protect your head and face from the elements.
The bag is also quite short and not really suitable for people much taller than 6 foot, however, Snugpak do an extra-long version which should suit most NBA players.
Overall, for the price the Snugpak Special Forces Bivvi Bag is good value for the money you pay and for ultralight hikers in temperate climates it makes an ideal choice. In more extreme weather conditions though you may wish to invest more for something with better head protection.
