Backface MeshPhysicalMaterial

Hi!
I have problem with my uploaded files via GLTFLoader. I see objects on the back although I changed side parameter.

const loader = new GLTFLoader()
loader.load(
    'shirt.glb',
    function (gltf) {
        model = gltf.scene;
        gltf.scene.scale.set(5, 5, 5);
        gltf.scene.traverse((node) => {
            if (node.isMesh) { 
                try {
                    node.material.map.image.src = "shirt.png";
                    node.material.side=THREE.FrontSide;
                    console.log(node);
                } catch(e) {}
            }
        });   
        scene.add(model);
        console.log(model);
    },
    (xhr) => {
        console.log((xhr.loaded / xhr.total) * 100 + '%')
    },
    (error) => {
        console.log(error)
    }
)


In blender my shirt look like this:

you best fix models in blender, not in code. blender can show you wrongly oriented faces in red, there’s a button it. you flip it until everything appears blue. it can also point to overlapping vertices and triangulation problems.