Blocking a Raglan Sweater

What is the best method to block a baby sweater knit raglan style? Because it is already assembled, I can’t block pieces individually.

The yarn is Sirdar Snuggly Kisses - 55% Nylon/ 45% Acrylic.

Thanks for the help.

For synthetic yarns, you just wash and dry the item.

Thanks. That makes sense. What would you suggest for the detergent/soap? I can’t remember what should be used for baby things. Is there a special item at LYS I could look for? I’ve not noticed something for synthetics or baby things. Just for wool yarns.

You don’t need anything special for acrylics, just whatever you’d wash storebought baby things with.