Are Zuru Bunch O Balloons Worth It for Summer Water Fights?

Here's the part worth understanding before you buy anything. Each bunch is a cluster of pre-attached stems, and every stem ends in a small rubber O-ring at the neck. You connect the whole cluster to a garden hose, turn on the water, and as each balloon fills and reaches its natural size, the weight and pressure pull it free from the stem while the O-ring cinches shut behind it, the way a knot would, except nobody tied anything. That's the entire trick: the sealing mechanism is built into the balloon before it ever touches water, so filling and sealing happen as one motion instead of two separate jobs. Ten bunches work out to roughly thirty five self-sealing balloons apiece, which is how you get the advertised speed, filling becomes a hose job, not a hand-knotting one. The stems and caps are recycled plastic and the balloons themselves are natural rubber, so what's left scattered across the yard afterward is mostly biodegradable rubber scraps and a hose, not a mountain of packaging.