Sleeping bag DEFENCE 4

The Defence 4 is the most popular and best-selling all-round sleeping bag with excellent weight to stuff size and performance ratio. It is a well-established, treeseason sleeping bag that has proven to be 100procent reliable on cold nights both in the wilderness and in snow caves. A protection flap on the outer side of the ziper keeps out wind and wetness. The outer shell is a super-light, highly resistant, microfibre nylon with a fine microporous coating which makes it waterproof. There is a generous draft tube on the inside of the zipper to prevent heat loss at the zipper.
Features:

Differencial cut
Zipper cover flap
Combinable (Part of the Sleeping Bag System - Tropen)
Trapezoidal foot section
Zipper heat strip
Anti snag tape
2-Way Zipper
Thermoflect
2-Layer Construction
Compression bag included

Isolation: G-LOFT Duro, 100procent PES Outer: 145G/m2, Inner: 145g/m2 Outer shell: Shellproof (100procent PA plus PU Coating) Inner lining: Shelltrans (100procent PA)
Comfort F: -8,8 °C
Comfort Limit M: -16,1 °C 
Extreme -36,6 °C
G-LOFT Plus Filling
Manufactured from high-quality bi-component polymers, the structure of G-LOFT insulation is in fact similar in many ways to high-quality goose down. The 3-dimensional crimping ensures maximum resilience and loft
TRIPLE-LAYER SANDWICH CONSTRUCTION WITH LOOSE SHELL
The three G-LOFT Plus insulation layers have offset quilting. The shell is not quilted with the filling, but attached later. This provides an air cushion between the insulation and the shell. With no stitch perforations in the shell, it is relatively water and airtight.
THE MUMMY SHAPE
Here the criteria of stuff size, weight and warmth are most important. The tapered foot section reduces weight and stuff size. The main advantage is, however, that from the knee downwards there is increasingly less internal volume to keep warm. The foot section should not be so small that the feet cause the layers of insulation to poke out. A trapezoidal foot section has proven to be ideal. A wedge shape, declining evenly in width from..