Those sheets of thin, pale blue paper, which folded in on themselves, sealed by three gummed flaps which you had to lick and fold down. They had red and blue diagonal stripes around edges on the address side. They were prepaid so did not need stamps, and had the Air Mail logo at top left.
We're immigrants, and I remember my mum writing several aerogrammes to her family every week. She'd fill all four panels, edge to edge, her writing half its normal size. Sometimes she'd write a letter all in one sitting, sometimes over 2-3 days.
These days we chat on the phone every few days, and dm asks about the children. But there's nothing to tell! Nothing's changed since we last spoke. How did she find so much to fill all those aerogrammes?