Pocket Shot Pro Pouches are rated at an incredible 300-350 fps, considerably greater than their standard counterparts! When you're looking to inflict maximum damage with your Pocket Shot slingshot, choose Pro Pouches! A cutting edge modern latex formula is employed in Pro Pouches to boost elasticity and, thus, shooting velocity. Like all Pocket Shot pouches, the pouches in this handy 3-pack are proudly manufactured in the USA using cutting edge techniques designed to maximize durability, accuracy and performance. Advanced, patented aluminum molds are dipped in the highest quality latex and hand rolled to perfection to produce a resilient stretch and extraordinary spring. Each Pro Pouch "fires" between 200 and 400 shots before needing to be replaced. They come a bit stiff but loosen up after 10 or so shots. Like disposable razor blades, Pocket Shot’s Pro Pouches are built to last, but it's always good to have a few extra around!