Grappling spats or BJJ tights are popular with those training no-gi BJJ or MMA enthusiasts. Even some who train BJJ in the gi wear BJJ grappling spats underneath their gi pants for extra comfort and compression that the tights give them. The grappling spats, which are also known as compression leggings, are ideal for many sports, including running.
Some brands, such as Scramble, Tatami Fightwear and Badbreed, cater their spats particularly to BJJ and MMA whilst Under Armour cater for all sports. Brands like Hayabusa also produce compression leggings for men that have a pocket to place a groin guard cup, doing away with the old style jock strap.