The mountain sleeping bag (fig. 2-37) is a mummy-shaped bag with a quick-release slide fastener at the front opening. The bag has quilted construction and is filled with a mixture of down and feathers. The shape of the bag gives maximum warmth with minimum weight. A waterproof clothing bag is provided for carrying and storing. The bag is laced to an outer sleeping bag case, also shown in figure 2-37. The tie tapes at the bottom of the bag are used to fasten the bag at the bottom of the sleeping bag case and to secure the bag for packing after folding and rolling. The mountain sleeping bag is intended

for use in locations where the temperatures range from 14F to 45F.

Here are some useful hints on the care and use of the sleeping bag.

l Always use the sleeping bag case to protect the bag and to provide extra warmth.

l Keep the sleeping bag dry. Breathe through the face opening to keep your breath from wetting the bag.

l Fluff the bag after unrolling.

l Put padding under the bag for warmth and comfort. Use the pneumatic mattress, packboard, clothes, or fir boughs for padding.

. Do not wear too many clothes when in the bag. Put some of them under the bag.

l If your face is too cold, cover it with a towel or muffler.

The bag is provided with a slide fastener. There are two methods of releasing this slide fastener. Under ordinary circumstances, pull the slide fastener down to release it. In an emergency, pull

Figure 2-38.-Adjustments to sleeping bag and sleeping bag case.

the slider up to the very top. (See fig. 2-38.) This releases the slide fastener-immediately along its entire length. To close the slide fastener after opening it in this manner, run the slider down to the bottom of the track, thread it into the other side, and pull it up again. Be sure both sides of the track are close together before closing. Use the side fastener quick-release feature only in an emergency. Rethreading the fastener requires time, and it is difficult to do with cold fingers.

To pack the sleeping bag, place it directly into the waterproof clothing bag, then roll it from the top to the bottom into a small bundle, and tie it with the tie tapes provided at the bottom. Always carry the sleeping bag inside its waterproof case.