Beige Cardigans from mytheresa
If you're looking for an affordable item, your best bet is this Open Cardigan. It's a fantastic item, while not very costly.
If you're looking for an item in the middle of the price range, we've got your back with this Acne Studios Cardigan. This item is likely to become a total wardrobe staple.
If you're looking at it like an investment piece, then what you're looking for is this The Row Open Cardigan. It's more expensive but worth your money.