Trosky Portable Rebounder Combo! Pro Portable Rebounder 26 inch x 26 inch The ultimate rebounder to become the best fielder possible from anywhere at anytime! Helps you work on every type of infield work, knee drills, 2 hand exchange  and also helps with fly balls as well! Build your skills as a fielder with the Trosky Rebounder.  Nothing like it, you train in your bedroom and get work done anytime, any place.