Outwell Cloud 1300 XL Square: 

A traditional rectangular sleeping bag, that can open up and be used as a blanket.
 
The bag is made using a loose shell construction to minimize cold spots and provide temperature ratings between +18°C down to -12°C. 

Ideal for lightweight backpacking, including a ridge hood, full length zip baffle and anti-snag guard, inside mesh pocket and the possibility of zipping together a left and a right bag.