They are for small bottleI cant fit a Large size justSkinny and long botle Just in time for boat season! The XR700s run strong all day and I haven?t yet had them quit before finishing a day. But it does not. I will intentionally avoid this seller at all costs in the future For clarification, my childs foot is not quite 7 inches so I ordered the 12-13 (listed as 7 1/8-7 1/2 inches). Excellent mic! So you will need to order more in order to go back to normal. Shipping was fast and the box it came with was very ergonomic and I liked that. Just make sure to plug it in at night though.