In this video, Chad's drum tech Chris Warren talks about his acrylic kit:

"So this is Chad’s new touring “I’m With You” drum kit. A very custom kit from Pearl. As you can see it’s an acrylic see-through kit, which you’re not gonna find on any shelf in any drum shop anytime soon. This is a very custom drum set for Chad. He came up with the idea, he called up the folks at Pearl and said, “I’d like a clear drum set please!” And they were happy enough to oblige him. And they’ve really done an outstanding job, it’s one of the best sounding acrylic kits I’ve ever heard. AND the fact that the Chili Peppers logo is frosted into each drum in sort of a random pattern is just so cool. Chad loves it, and it sounds great."

According to Pearl's Artist page, the kit consists of: 24x16 Bass Drum, 12x8 Tom, 14x14 Floor Tom, 16x16 Floor Tom

Richard Goddeau a talented blind drummer who trained at Crane School of Music and also played country music in Nashville TN has been a part of PMT since 2006. Richard played many shows with his 13 piece Pearl Masters series kit with Gibraltar rack and roto-toms at many 2005-2007(early era) Positive Mental Trip concerts. You can hear Richard and his Pearl Masters series drum set on “Back Up Again” on PMT’s “Change Your Mind” album. (2012) Richard Goddeau and his Pearl Masters series drum set can also be hear on the epic 12 minute version of “circles” which ends the Positive Mental Trip’s “The Black and White Album”. Richard Goddeau player “circles” 100’s of times at practices and live shows back in the day so he was the obvious choice for the album version. “We hope to hear rich and his 13 piece Pearl Masters Series drum kit on at least 1 or 2 songs we are tracking for the “Love Never Dies” album in August 2019.”