Balloons

Where can I buy balloons that will last at home for at least 2 weeks?

Every time I'm preparing for a holiday thinking about its decoration and give the best view of my house, I always prefer to order the composition of the balloons in this store https://birthdayballoons.ca/, I choose it because the guys have their own production and balloons are at home for a month and please my eyes, you can also make some adjustments and make an individual order!