Sleeping bag dimensions: 190 x 75 cm. Packed size: 15 x 38 cm. Weight: 1 kg. Outer material: waterproof and breathable polyester pongee; Filling: hollow cotton, which enhances breathability while retaining warmth; Lining: washed cotton, offering a soft feel. Joinable design: features a two-way zipper allowing it to be fully unzipped; two sleeping bags can be joined together to form one large, spacious sleeping bag. Temperature range: comfort temperature: 13°C; transition temperature: 7°C; extreme risk temperature: -4°C.