The X4 upholds the handsome and ultra-minimalist look of the series with metallic accents. Find and select Jaybird X4 from. Feb 8, 2018. In my YouTube video, My Travel Packing — Backpacker vs Minimal, I go through everything in my large…. Also, this packing list is based on my travel style (long stay travel). PNW — Day Pack; Osprey — Ultra Day Pack. If you’ll be climbing up some Great…