Gilbert gtr4000 rugby training ball the gilbert gtr4000 rugby training ball ball benefits from the hydratec moisture barrier which is designed to enhance the life and performance of the ball whilst the textured tri grip technology on the outer allows for a easier catch this rugby ball has the classic 4 panel design with hand stitching and is complete with gilbert branding for a great look that also offers instant brand recognition rugby training ball 4 panels hand stitched t