Specifications
Waterproof shell
The outer shell of our Torpedo sleeping bags is made of eVent waterproof/breathable fabric. Since the eVent fabric roll is not wide enough to allow a whole bag to be cut as a single piece, the shell is made up of two pieces of fabric which are sewn together. This seam is then taped to ensure that the shell is completely waterproof.
The bag is opened and closed by means of a highly water-resistant Riri Aquazip, whose plastic teeth mesh to form a watertight seal.
In other words, the only part of our Torpedo sleeping bags that isn’t completely impervious to water is the area around the head, which is why we don’t recommend using them out in the open rain. Other than that, they will give complete protection.
Baffles
The inner of every Torpedo sleeping bag comprises a system of vertical and horizontal baffles. These compartments are designed to hold the down in place around the body of the sleeper and maximise the performance of the bag as a whole.
The baffles are made of a very lightweight mesh and are welded to the inside of the shell. We owe thanks to Exped for allowing us to use their patented method (www.exped.com). Torpedo sleeping bags are typically made up of 46–54 baffles, placing them amongst the most sophisticated designs currently available.
Looking at the pattern of baffles on the inside of the bag, you will see that the torso area (i.e. the top half of the front of the bag) is covered by vertical V-tubes. V-tube baffles hold down in place more effectively than any other method. The rest of the bag – i.e. the lower half of the front and the whole of the back – uses slant box wall baffles, an overlapping system which prevents any cold spots.
The Torpedo 500 employs a standard side wall to prevent the movement of down between the upper and lower half of the bag. The 700 and 900 models have a V-tube baffle running the full length of the side to reduce heat leakage from this area.
All Torpedo sleeping bags have double baffles to cover the zip, and these are connected directly to the full neck baffle. The neck baffle itself has a conventional one-handed shock-cord adjustment. There is also an adjustment cord around the perimeter of the hood.
For more information about baffles and the internal construction of sleeping bags in general, click here.
Zip
Torpedo sleeping bags use the highly water-resistant Riri Aquazip. The zip has a generous length of 158 cm, which equates to full-length on the Small bags (more like ¾ length on the Medium and Large). Torpedo sleeping bags are available with either a right-hand or a left-hand zip in size Medium, and only with left-hand zips on the size Small and Large.
