The Tension Brick 600 is a spacious and comfortable extreme style down bag that offers you full protection from the cold in the most unwelcome conditions you can find. You choose the brick shaped bag if you prefer a roomy nights sleep with proper leg room and freedom of movement. The technical and detachable hood can be used from both sides and the bag can be combined with another similar bag by easily zipping the two units together. The two-way full length zipper is down covered to keep the hot air inside the bag where you can enjoy it.