Eau de toilette fragrances are less concentrated and generally don't last all day. The 100-ml packaging is small enough for you to bring in your carry-on on a plane.
From The Perfume Shop
Maison Margiella Whispers In The Library Eau de Toilette Spray - 100ml
Cosmetify
Maison Margiela Replica Whispers In The Library Eau De Toilette 100ml Spray 100ml
Notino
Maison Margiela REPLICA Whispers in the Library eau de toilette unisex 100 ml
OnBuy
Replica Whispers In The Library by Maison Margiela EDT 3.4oz Spray New With Box