Posting seedlings/plants

[welshfox]

Hi, Can anybody please tell me what the little plastic holders are called that are used to send seedlings/young plants through the mail system? Or even where I could buy some please? They're 2 pieces of plastic joined together that have room at the bottom for the roots and a little soil, and have smaller inlays then for the leaves or stems higher up.I'd like to send some of my seedlings to relatives. Thanks in advance

[Hawkwalk]

blister packs - plenty online if you google it.

[welshfox]

Thank you so much - I just couldn't think of a word for them - You're a star Hawkwalk. Thanks again x