Deuter has managed to do something quite tricky here: they've produced a reasonably priced bag that does not lack in performance or quality. This L size is longer and has more width at the shoulders than the regular model. - Worry-free High-Loft Hollowfibre insulation tolerates moisture - Durable materials: 70 denier polyester and 40 denier ripstop polyester - L size:suits up to 200 cm users - Width at shoulders: 79 cm - Width at foot box: 49 cm - Thermal collar helps prevent heat leaks - Small inner pocket - Two-directional zipper: you can couple the bag with another Deuter bag, using their zippers - Compression stuff sack - PFC free The choice of "left" or "right" tells which side the zipper is on when you are sleeping in it. Most right handed people choose a "left" bag and vice versa.