It is an old model or a product that we can no longer order at the manufacturer.
Don't cancel your next overnight adventure because the forecast calls for a bit of rain: bring the Trestles 15 Long Womens' Sleeping Bag from Marmot, designed to perform in cold and wet conditions. The Spirafil™ insulation will keep you warm even when it's damp. After a long day of exploration, zip up the full-length two-way zipper, pull on the 3D hood, and give your feet optimal rest in the spacious footbox. Its wave construction on top and blanket construction on the bottom provide an unbeatable combination of warmth and comfort, with reinforced insulation in strategic areas. If it gets too stuffy inside, use the secondary fold-down zipper for some air. Clearly, the Trestles 15 Long is made for adventurers.