Whistle V2: NN x Kontrl
The classic 510 Whistle V2! in matching materials provided by Kontrl...
DMNSN - blue and clear swirl that glows
RSTY WTRS - blue and copper swirl
TXC SMKD - green and smoke swirl
STRGZR - black and clear swirl with glitter
(Damn, that Kontrl dude really hates vowels) lol