If your summer bike tour is going to take you through different climates then the UltraLite is a good choice. With a 59"/150cm shoulder girth this efficient bag is good to -7deg C. The full down collar helps to seal in heat around your neck without adding excess bulk, and 16 oz/450g. of high lofting down pumps this bag to 5". The total weight of this very compressible package is only 1 lb 13 oz/820g.
Full-length #5 YKK Zipper Full Down Collar 5 1/4" Spacing/Continuous Baffles 59"/38" 150cm/96.5cm Shoulder/Foot Girth 5" Loft, -7 deg C 16 oz/450g. Down Fill 1 lb 13 oz/820g. Total Weight
Full-length #5 YKK Zipper 
