50 ml is a small packaging, but that also means you can take it in your carry-on when traveling. Eau de toilette fragrances are less concentrated and generally don't last all day.
From AllBeauty
Dolce&Gabbana - The One For Men 50ml Eau de Toilette Spray
The Beauty Store
Dolce & Gabbana The One For Men Eau de Toilette 50ml
This product is also available at 2 unverified stores.