This cocoon cardigan is made with a lightweight sweater knit. It can fit a variety of sizes but it really depends on how you like your clothes to lay. Notice how it looks different on the mannequin than me (because the mannequin has broader shoulders and a bigger bust!). Here are the measurements worth noting.
 

Wrist to wrist: 54 inches 
Length: 40 inch but stretchy, good for TALLer than 5'2 person
Wrist Cuffs: 9 inches with stretchy material
I am 5'1 for reference.