The ONE PLANET Insulated Hydration Bladder Insert lets you simply and effectively organise your bag, adding a protective pocket for carrying a hydration bladder. Made from 4 mm closed-cell foam to provide insulation, the insert is easily and securely attached via a tough, 30mm wide hook-and-loop strip so it can be quickly and easily removed or added to suit your needs. with options in 2-3L or 3-4L bladders.

Add-on inserts are compatible with ONE PLANET EXACT FIT Mid Packs (Day & A Half and Travel) and most daypacks.


(Hydration bladder not included.)


  • 2L-3L: 225mm x 405mm
  • 3L-4L: 250mm x 415mm


  • 2L-3L: 160g
  • 3L-4L: 180g