uppababy mesa extra base V2 Infant Car Seat Options:EXO-R330 FULL-FACE HELMET HAWKER HI-VIZ MD | 75-3251M | 33-1124 attach the the MESA collection:kids Authority Laptop Backpack Deluxe

uppababy mesa extra base V2 Infant Car Seat Options:EXO-R330 FULL-FACE HELMET HAWKER HI-VIZ MD | 75-3251M | 33-1124 attach the the MESA collection:kids Authority Laptop Backpack Deluxe

Authority Laptop Backpack Deluxe | 28L Work Pack | Timbuk2 One Size / Eco Black Deluxe

Supports a baby’s natural position with their legs and head slightly elevated for optimal comfort for your newborn

collection:kids

Options:EXO-R330 FULL-FACE HELMET HAWKER HI-VIZ MD | 75-3251M | 33-1124

Well, I wasn't aware either until I did a little snooping and found that the four pieces are used for Nitro engines

attach the the MESA MAX to VISTA and CRUZ strollers directly (sold separately) with no adapters needed