Clik Elite CE301GR Medium SLR Chest Pack (Gray) Padded camera bay fits most SLR bodies with lenses up to 5.5 long Convertible strap becomes four-point chest harness for active mobility; fitting comfortably under traditional backpacks (comes with Medium ChestPack) Four-point sport harness for active mobility, fitting comfortably under traditional backpacks (comes with Large ChestPack) ChestPort buckles dock seamlessly with Clik Elite backpacks to keep camera at the ready and optimize weight distribution for the long haul Comfort-molded rear panel sheds snow and dirt, vents heat and moisture