I ordered these for my daughter who has an NG tube in to keep her from pulling out.

First, they are wonderful.  With the mesh, her hands can breath and don't get too warm and moist like with traditional scratch mittens.

Second, they are a little on the large size.  I'm not sure it's because she a little baby with small hands.  But, it will help as she grows as she has lots of room to open her hands inside.
We found if we put them on her hands, and the put the cuff over her long sleeve outfit they will stay on.

Overall, I'm very pleased with this product and highly recommend it.