The B17 Carved features the central cut-out, first designed by Brooks over 100 years ago. The “registered cutting”, as can be read in the 1890 catalog, is “a sure preventive to all perineal pressure".
A new saddle should be treated with Brooks Proofide Leather Dressing to help assist the "breaking-in" process. Proofide also helps to keep the leather supple as it is carefully formulated from special ingredients to condition, preserve, and shower proofs your saddle. Brooks Proofide is the only substance that should be used to take care of your saddle.