Born Rowdy: Built to be as at home on the jump line as it is in the BMX start gate, the Bell Sanction 2 DLX Mips was designed to rule whatever terrain gets in its way. orn Rowdy. Built to be as at home on the jump line as it is in the BMX start gate, the Bell Sanction 2 DLX Mips was designed to rule whatever terrain gets in its way. Fit and breathability are amply handled via our Ventilated DH Air padding and the Ionic+TM comfort liner; 14 vents to prioritize ventilation; Fidlock buckle for easy, one-handed release. Finally, in addition to both ASTM Downhill and BMX certs, we included Mips to help reduce rotational forces in some impacts.