I just bought a new Amigo blanket, and after I recieved it I found out that that particular doesn't have the elastic leg straps. I wouldn't have thought much about it, but my instructor tells me that they are essential. Do you think they are? I have a hard time believing that, if they were, a brand that never attatches them to their blankets would be so popular. I would also prefer to not have to pay to have leg straps attatched.