Head-protecting airbag

A head-protecting airbag according to the present invention is folded and housed in upper edge of windows inside a vehicle, and is deployable upon inflow of inflation gas to cover interior side of windows. The airbag includes a protection portion inflatable for protecting occupants' heads upon airbag deployment by separating its vehicle's inner wall and outer wall. Both of the inner wall and outer wall are made of fabric, and at least one of the walls is made of uncoated fabric which is not coated by coating agent.