Neosphere range of bags from Deuter are packed full of features, including a compression stuffsack to reduce packed size. Having elastic seams that allow this bag to maintain a closer fit enhances its warmth, and the down insulation is captured in trapezoid chambers within the bag to reduce cold spots. The performance of the down is further enhanced by the Dryzones in the head and foot section where the outer fabric is treated with water repellency. There is a long side zip that allows the calf area to be vented, with a very wide baffle that’s well-filled with insulation plus an anti-snag strip, and this whole area of the Deuter Neosphere -4 is very well-designed for ease of use and comfort. Around the shoulder is another wide collar with good insulation and an elasticated drawcord. The hood also has good insulation and a drawcord that’s a different design from the shoulder cord, so it’s easy to differentiate between them. As the Deuter Neosphere -4’s name suggests the bag has a temperature rating of -4 deg C; and while some other models have a lower temperature rating this bag also appears warmer than some bags here – and certainly for those who don’t need the warmest option it is a great choice. The drawback is that it’s slightly heavy for its temperature rating.
Weight (with stuffsack) 1108g (1177g)
Length x shoulder width 205x80cm
Packed size 17x29cm
Outer fabric Deuter-Diamond 30D nylon, Dry Zone treatment
Inner fabric Tactel Softlining nylon
Insulation 90% down, 675+ fill power
Construction box wall
Comfort +2 deg C
Lower comfort limit -4 deg C
The Deuter Neosphere -4 is a great price for a bag that’s bursting with performance-enhancing features, and it would be ideal for many UK backpackers. It won Trail’s ‘Best Value’ award.
Review by Graham Thompson
Published in Trail magazine June 2014