This sleeping bag is matched to the Kulkyne Kampers Big Boy Swag, so it fits on to your mattress keeping the sleeping bag in position while you're sleeping! This is the highest quality sleeping bag on the market and has 4 separate temperature ratings so you can use it all year round! Sleep in the winter position and you get a snug -10 degree rating; Sleep in the autumn position and you get a warm nights sleep without being too hot; Zip out the inner and you'll get a beautiful nights sleep in mild weather without being too hot or too cold! Use the summer sheet only and you can have a comfortable nights sleep even in summer. This is where other high quality bags struggle, they keep you warm in winter but cook you in summer! This is sleeping bag designed specifically to fit your Kulkyne Kampers Big Boy Swag! It also features 100% cotton material on the inside of the swag so it breathes and doesn't irritate your skin! With this sleeping bag we've considered it all! Dimensions - 220 x 110cm