36" balloons are big balloons that are great to ride when you underinflate them. Not only can they take my full weight, they can also take lots of hard bounces! I love long and luscious rides with the balloons and you'll definitely get a lot of these with three 36" balloons. To make myself even more excited, I take a Qualatex 16" crystal balloon and blow to pop it while i'm on top of them!