Rhino Skin Foam Training Tennis Ball Set\r\nSafe, soft and quiet, these high-density foam training tennis balls are perfect for youths and adults alike. Manufactured in Sweden with the highest quality foams available, the Rhino Skin foam training tennis balls have normal bounce characteristics but travel at a slightly slower speed than standard tennis balls.\r\nThe foam construction allows beginners to practice without the fear of being hurt by a standard tennis ball, while the optic yellow color makes them easier to track and hit. Ideal for indoor and outdoor use. Sold in sets of three, there are two sizes available: 2.75\” standard size and the 3.5\” oversized training tennis balls.\r\nFeatures:\r\n\r\nLightweight and safe\r\nDurable enough for outdoor use\r\n2.75\”D and 3.5\” D sizes\r\nWeight: 12 g and 26 g weights\r\nFoam density: 65 kg/m3\r\nYellow\r\n\r\n\r\nItem # RS27 (2.75\” tennis balls), RS35 (3.5\” tennis balls)