Unlike push button style clasps, these won't pop open if you bend your wrists and accidentally hit the push button as on other clasps - just pull on the long part of the strap to open them.
$4.50 shipping - each additional buckle ships for free when shipped at the same time, so grab a few! Because of the price point, no returns for this item - they are being sold at a loss.
Sorry, but no international shipping.