What is this called? [Autism/Sensory]

DS LOVED this. I want to get similar for him. WHAT do I search for?

Is that a weighted blanket?

ETA: Never mind that's more like a swaddle or wrap?

weighted blanket? I'm looking into one for my daughter.

Looks like this:

http://consumercarellc.com/category/BH.html



Got link from here:
http://www.autismspeaks.org/family-services/resource-library/sensory-tools-products