The Blue Devils Drumline revealed their costume change for their System Blue Natal drums. The line changes drum slips in the middle of their ballad and transforms the battery from their Caliban slips to their gold slips. This change adds general effect as it coordinates with the color guard flags for the last third of the show. This is a game changer, as System Blue is the first company to offer this option.
Check out the On2 Drum Slips for yourself -
see the interview here: On2Slips