Exped's Lite 700 Sleeping Bag 700 Goose Down 3 Season is their classic in the down sleeping bag range covering all aspects of a good all rounder for 3 season use from versatility, features, and temperature rating. Use it from spring to fall and in combination with additional clothing or a liner in winter.The Lite 700 Sleeping Bag 700 Goose Down 3 Season is part of Exped's Trekking series. The sleeping bags in the Trekking category are designed to withstand the rigors and go anywhere. Lightweight yet comfortable, the Lite Line sleeping bags are alpine classics for 3 to 4 season use. A draft collar maximizes warmth by trapping warm air and further insulating the neck.