Srixon.com is an excellent online store to find golf balls and other golf related equipment. They have everything from yellow golf balls to driver golf clubs, to golf visors and bags, and more.
They also have a online custom fit for a srixon golf ball to improve your game. Just answer the questions online form to get it customized. Srixon has great product line and prices for their quality. Choose from premium golf balls or other types of the srixon golf brand. I encourage you to check them out!