Are the babywraps stretch?

The Love Radius wraps (JPMBB Original and BASIC) are designed as a hybrid between woven and knitted, it is not a simple stretch wrap. There are several stretch / soft wraps. Some are simple cotton jersey, not very wide and indeed not very durable.
The little wrap without a knot offers light cushioning.
While having real and secure support, you and baby can have free movement, especially the carrying shoulder.