Product details:

If your summer bike tour is going to take you through different climates then the UltraLite is a good choice. With a 59 shoulder girth this efficient bag is good to 20. The full down collar helps to seal in heat around your neck without adding excess bulk and 16 oz. of high lofting down pumps this bag to 5. The total weight of this very compressible package is only 1 lb. 13 oz.Made in USA
20??F temperature rating and 5IN loft
Made with very breathable and weather resistant 20 denier shell fabric and filled with 16 ounces of 850 plus fill power goose down
Full-length #5 YKK zipper with an insulated draft tube and a full down collar to keep the warmth in
1 lbs. 13 oz. total weight and 59IN/38IN shoulder/foot Girth