Our hand blown glass balls are great for just about everything except bouncing. Use them in your garden pond, bird bath, as yard decorations or as room decor nestled in one of our wonderful bowls. And, Yes! They float! They are a very durable indoor/outdoor colorful decorative accent. Safe for fish and feathers. They are available in 3 inch, 4 inch, 5 inch and 6 inch diameters. Each ball is unique in the way the colors blend together. The art glass has a tendency to look completely different when rotated. Please note that since each ball is unique, the ball will come from the same color batch as the one pictured, but the float you receive may have a slightly different distribution of colors. They are finished with a colorful clear decorative flower stamp. This stamp has a tendency to float down. They are not recommended for swimming pools, hot tubs, bath tubs, or near bare feet. The are very durable, but accidents do happen. They are not painted but colored glass and will not fade in the sun. Please wash with vinegar or a hard water cleaner to remove any hard water deposits.