Premium MMA Training Shorts for MMA Grappling, Kids and Adult sizes Kids and Adult sizes available. No logo (blank) MMA Board Short. Customize your MMA Short with your own choice of logo or to resell in your gym Proshop to your students with your Gym/Academy logo. Designed for Kids. Loose fit grappling short made from of polyester fabric. Super stretch flex panel. Great for training and competition. Shorts also include bi-directional adjustable waistband system with internal drawstring. Full cut to accommodate protective cup, with 4" split outseams. Adjustable waistband design, and internal drawstring that provides secure fit, reducing shifting during ground fighting. No Logo Adults MMA Board shorts available in Youth and Adult sizes