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SELTZER SASSY SIS is made up of mildly sparkling water infused with natural essences of herbs, vegetables or fruits. Nothing more.

It’s ideal to drink after a workout, pilates, in the office or café and on your sofa while binge watching your favourite series. Wherever and whenever you feel like it! If you fancy (and you are at least 18 years old), you can mix SELTZER SASSY SIS with a little gin or other quality spirit to get a delicious cocktail low calorie option.


That is why infusing water with fresh herbs, fruits or vegetables is a great solution. You throw a few slices of cucumber, lime or mint into the water and you have a detoxing drink for the whole day. Fantastic!

SELTZER SASSY SIS is the result of 2 years of searching and trialing, so that this “miracle” of infused water could be sipped anywhere, anytime!

Zero sugar, sweeteners and calories. Only natural ingredients plus delicate bubbles. #Goodbyesugarhelloflavour!

Let me know if you like it.


About us

Me and my sister have never wasted time on nonsense. Since the age of 3, we were already looking for a perfect balance between what is healthy and tastes good. 🙂 Over time, studying strenuous labels and the composition of food products had become a normal ritual.

We all know that water is healthy and we need to drink it in order to maintain a slim figure and good skin. However, it is hard to drink something that is tasteless. Sweetened beverages (even those with sweeteners or other substitutes of sugar) are ruled out as reports indicate that they can be dangerous, as sugar is supposedly the new tobacco.

Find Sassy Sis!

You can find SASSY SIS at a location near you:


Croissant Cafe
Rudzka 28
01-689 Warszawa
DOM Sklep
Stefana Czarnieckiego 55
01-541 Warszawa
Warszawski Dzień
Catering services
Na Okrągło
Hala Gwardii
Plac Żelaznej Bramy 1
00-136 Warszawa
Triki Tashka
Plac Konesera 3
03-736 Warszawa
Vini E Affini
Ul. Biały Kamień 5
02-593 Warszawa


Kawiarnia MIŁO
Kącik 6
30-549 Kraków


Hotel Nosalowy Park
Tadeusza Kościuszki 18
34-500 Zakopane


Schronisko Smaków
Ul. Tadeusza Kościuszki 94
34-530 Bukowina Tatrzańska