Naniwa Natural Leather Strop, for final finish. Top leather surface is calfskin, bonded to foam rubber pad, bonded to magnolia wood block, with foam rubber pad on the bottom to help keep the whole thing from sliding while in use. A nice little affordable strop in a "stone" form-factor.
If you're looking for stropping compound to use with your strop, we carry the nice DMT diamond paste.
Warranty: 90 day warranty against manufacturing defects.