Adding more fill weight can make up for a low fill power (ignoring . How You Can Tell How Warm a Down Jacket Is - The Big Outside In theory, 50 g of 900-fill-power down would be the same warmth as 100 g of 450-fill-power down; it would also compress to about half the space. Fill power is diplayed in the form of a number, which you'll normally find stitched somewhere on the outside of a down sleeping bag, or on the sleeve of a down jacket. If you had 113 grams of 800 fill power in Jacket C and 227 grams of 650 fill power in Jacket D, they could have similar warmth. An 800 fill power jacket will require less down than a 500 fill power jacket to provide the same warmth. 500-600: The 500 or 550 fill power is perfect for those live in a warmer climate where temperatures rarely drop below freezing. Patagonia is a designer of outdoor clothing and gear for the silent sports: climbing, surfing, skiing and snowboarding, fly fishing, and trail running But again, much depends on the fill weight. How You Can Tell How Warm a Down Jacket Is - The Big Outside The North Face® products are insulated with exclusive, high-fill power goose down ranging from 550 to 900 fill, which represents the highest quality down commercially available. Superior Warmth and Comfort; Lightweight Insulation; Increased Loft Than Lesser Fill Downs (900 + 800 only) Highest Quality, High-Fill Power Goose Down Over time, reviews show that the product is credible, long lasting and durable. The higher the fill power, the more air a certain weight of the down can trap, and thus the more insulating ability the down will have. PrimaLoft makes the best synthetic insulation on the market, and almost all high-end outdoor brands use its products. Down to feather ratio is also important, and the numbers should always be heavily in favor of down. Down Fill Temperature Chart (Updated March 2022) | ORASKILL $230.00 Rating. Down jackets lose insulating power noticeably when its wet out. Many products developed from down are characterized by down ratings of 400-500 which is often considered of low quality. $230.00 Rating. Down jackets with a high fill power are usually lighter, less bulky and more compressible than jackets with a low fill power that are equally warm. Fast delivery, and 24/7/365 real-person service with a smile. To test fill power an ounce of down is compressed by a weight in a glass cylinder. Two jackets with the same fill power can offer different warmth. A jacket with 500 fill power and 10 oz. Guide to Down Fill Power Ratings - WebTogs Goose Down Fill - The North Face Kathmandu down jackets: what is down Down Jacket Fill Power 650 Duvet 700 How to Pick Your Puffer Jacket . 900 fill) traps more insulating air pockets between it's fine . Spyder is one of the largest winter sports brands in the world, as well as an Official Supplier to the U.S. Demystifying Down Fill Power - Outdoor Research Fill power vs. weight. Night Blue. But at not lesser than 550 fill power rating, quality of the jacket (or even any product) is guaranteed.