i had to pull it a little tight to touch, i couldn't get the darn ribbon to stay still! if it could lay flat there's about a 1/8inch between the ends not pulling at all. when i put it around my bp i had ti tight against her skin, then she slithered right out of it. Im pretty confident she can take it safely, i didn't realize how small those mice were!
Shes been such a good eater, i have high hopes for her switch to rats, Im going to push it back till Wednesday thaw a rat and the mouse and try to scent the rat to help her.
I know how you feel with your local shops..its a pain when they don't have good stock.