Kluft Royal Sovereign is an innerspring collection featuring zoned, honey comb nested, individually wrapped coils with enhanced lumbar support (775 queen), English outer tufting design, cashmere, coma wool, latex and memory foam. It comes in 2 designs - original and luxe top.

The exact comfort layers vary largely from one retailer to another, providing custom retailer-special models to different stores, however the support structure remains the same. There are several softness options available: firm, luxury firm, plush, pillow top and possibly others. Each model will have different height and different selection and thickness of comfort materials to achieve a specific feel, but support structure is identical. Known model names: Prelude, Overture, Concerto, Sonata, and Minuet. 10 years non-prorated warranty.

Kluft is a luxurious brand of innerspring and latex mattresses. It is known to be "the last handcrafted mattress".