Paying homage to the seminal book "The Science of Wrestling & The Art of JiuJitsu - this set up follows our kimono and we've done it in a uniquely Vanguard way. This premium grappling short goes perfectly with the rashguard as a set. A unique new and improved fit short with a 2-in-1 liner that features the VANGUARD design. Easy-on system with an elasticated waist and internal draw-cord, the fabric is multi-directional stretch and ultra light weight which features a spandex gusset for uninhibited movement. All seams are re-enforced for durability. No Velcro / no hassle.