All you do is slip the capsule on and heat. You can read on the web how to hold the capsule in place with a long fork or bent wire while you dip it briefly and carefully for 10 seconds into hot water. The capsule will shrink closely to the form of the bottle and look just like the ones from the winery. There is an attractive gold tear tab on each capsule and a glossy top. Fits all the bottles and corks I sell here on eBay as well as most any standard wine bottle.