If you want to enter your first experience of cold winter conditions, confronting serious negative temperatures, and are on a reasonable budget, the "900 gram Pyrenean duck" will do the job. No technical "bling" in the construction. The Swing 900 is a well-proven and classical H-box wall construction, sewn in a 90° angle, and stitched from the inside. 17 continuous compartments run over the top and on the back. The hood of the Swing was improved by adding a central piece of fabric next to two lateral pieces. The static draw cord runs perfectly, making the hood easy to adjust with high precision. But the central key improvement on the Swing is a serious increase in the inside volume. With a perfectly balanced anatomical shape, the Swing offers great comfort with a high level of security. When you are looking for your first down bag for 4-season use, a Swing 900 is your choice.