There is much obscurity as to the meaning of the word tachash , rendered "badger" in the Authorized Version, (Exodus 25:5; 35:7) etc. The ancient versions seem nearly all agreed that it denotes not an animal but a color, either black or sky-blue. The badger is not found in the Bible lands. The Arab duchash or tufchash denotes a dolphin, including seals and cetaceans. The skins referred to are probably those of these marine animals, some of which are found in the Red Sea. The skin of the Halicore , one of these, from its hardness would be well suited for making soles for shoes. (Ezekiel 16:10)

The Abiding of the Spirit the Glory of the Church
... magnifical," yet the Lord God had of old dwelt within curtains, and never was His
worship more glorious than within the tent of badger's skins; indeed, as soon ...
/.../spurgeon/spurgeons sermons volume 32 1886/the abiding of the spirit.htm

Badger

Badger for Shoes

Badger Skins

Badger: Skins of, Used for Covering of the Tabernacle