The Kelty Mistral 20 is a three-season synthetic mummy bag with Recycled Cloudloft Eco insulation made from recycled fibers, rated by the manufacturer to -2°C comfort / -7°C limit. It offers a lighter, more affordable alternative to down for trips outside the depths of winter.
At 1510 g total with 970 g of fill, its warmth-to-weight ratio of 4.6 is a standard figure for a synthetic bag in this category. Both shell and liner are recycled 68D polyester taffeta with a PFC-free DWR finish, and a full draft collar and draft tube back the full-length two-way zipper. A stuff sack is included, packing to 48 x 25 cm; internal length is 193 cm with a maximum user height of 183 cm.
With recycled materials, a PFAS-free finish, and a reasonable price point, the Mistral 20 suits weekend and multi-day three-season trekking, where synthetic reliability in damp conditions matters more than shaving weight down to down-bag levels.