How Do I Fix This Problem With My Normals??

I created a character in blender with an armature and a skeleton, and when I import it into unity with its normals facing out i can see through the front of the mesh, this is how it looks with correct normals

and when i flip the normals the other way I get this(the shading is backwards)

ive been trying everything (making normals single faced, messing with import settings, etc.)and nothing has worked, if anyone can help it would be GREATLY appreciated.