Long Sleeve T-Shirts by Theory Add to WardrobeRemove from Wardrobe FavoriteUnfavorite Shop It Outfits Sort by featured Sort by price: high to lowSort by price: low to high Theory Long Sleeved Mock Neck Top $179 $298 Theory Gaskell Long Sleeve Crewneck Shirt $62 $125 Theory Gaskell Long Sleeve Crewneck Shirt $125 Theory Gaskell Long Sleeve Crewneck Shirt $125 Theory Gaskell Long Sleeve Crewneck Shirt $125 Theory Elias Long Sleeve T Shirt $105 $175 Theory Gaskell Long Sleeve Crewneck Shirt $125 Theory Gaskell Long Sleeve Crewneck Shirt $125 Theory River Thermal Stitch Long Sleeve T Shirt $121 $185 Theory River Thermal Stitch Long Sleeve T Shirt $172 $185 Theory River Thermal Stitch Long Sleeve T Shirt $99 $185 Theory River Thermal Stitch Long Sleeve T Shirt $110 $185