Therm-a-Rest Ventra Down Comforter

From Mountain Gear:
When you want the warmth and comfort of down when you're sleeping, but you want it without the mummy fit, the Ventra Down Comforter from Therm-a-Rest is your solution. Just snap this 650-fill down comforter to your Therm-a-Rest sleeping pad via a simple Snap Kit or a Fitted Sheet, and you have the sleeping bag feel on top with more room to move and more versatility; comforter can also be used a stand-alone in a myriad of situations.
Features:

• Integrate this down comforter to your Therm-a-Rest sleeping pad with Therm-a-Rest's Snap Kit or Fitted Sheets
• Provide down warmth to your camp-time slumber, or pack this comforter with you to the game or concert; it's lightweight and packable and is rated to keep you warm down to 40 degrees

Specifications:

• Weight: 2 pounds (Regular); 2 lb 5 oz (Large)
• Dimensions: 76 x 48 inches (Regular); 80 x 58 inches (Large)
• Temperature rating: 40 degrees Fahrenheit
• Insulation: 650-fill down
• Material: nylon