I bought this new last winter. Had it down past 0 F. Got to -2 or -19 Celsius with a UQP. Works great! Stored uncompressed in a huge vented mesh bag. No pets or smoking here. Reason for selling is I am making my own quilts and hoping to do as well Motivates me to get it done. Standard Specs from JRB Website: Mt Washington 4 Length: 77 inches (1.96 m) Width: 42 inches (1.07 m) Loft: 4 inches (10 cm) Material: 1.1 ounces, 30 denier, ripstop nylon Insulation: 800 fill power goose down Weight: 29.5 ounces (0.84 kg) Temperature Rating: 0° – 5° F (-18° C) I ordered it with 2 oz overstuff, ActiveDri 800+ down I will work for gathered end hammocks or Bridge Hammocks (website claim) I added line loc3's to the corners to replace the hard to adjust length of shock cord they give you. I paid something higher than it is selling for now $329.95 (+ $20 for the overstuff) Sell it for $290 USD Shipped to Canada or USA My invoice: Product Quantity Price Mt Washington 4 fill-power: 800 Activ-Dri 1 $329.95 2 Ounce Over-Stuff 1 $19.95 Cart Subtotal: $349.90 Shipping: $40.95 via Mexico and Canada Order Total: $390.85 Paypal please. James IMG_4542.JPG james3.jpg P1020147 [800x600].jpg