These are Knitted Knockers. They are breast prostheses that are given free to women who have had mastectomies, and who request them. I have no actual experience with that side of the equation, but there are quite a few seeming advantages to these over some other non-implant options. Here's what they say on their website:
Knitted Knockers are special handmade breast prostheses for women who have undergone mastectomies or other procedures to the breast. Traditional breast prosthetics are usually expensive, heavy, sweaty and uncomfortable. They typically require special bras or camisoles with pockets and can’t be worn for weeks after surgery. Knitted Knockers on the other hand are soft, comfortable, beautiful and when placed in a regular bra they take the shape and feel of a real breast. Our special volunteer knitters provide these FREE to those requesting them. KnittedKnockers.org
This has been a departure for me, but I've been knitting prayer shawls for quite a while, and I have to say, I'm a little tired of them. A friend told me about these. Her mother asked her to knit some for her, and she's been doing them since. They're a fun project, quick, and interesting knitting, yet not requiring total attention. A really good travel or television project. You can choose which size to make from their pattern.I am using Paton's Grace, one of the approved yarns. They have a long list of yarns that have been tested to remain soft after washing, etc. I've had no problem finding it at Michael's.
You can see that mine are not stuffed yet. I will send them in for distribution without stuffing them, as it's easier to mail them flat, and they are adjustable with a drawstring at the center hole on the back, and the recipient can personalize them with the amount and type of stuffing, including adding weight if desired.
Here's what I've done so far.