Any leather product will benefit from an initial treatment with 100% pure Neatsfoot oil. It will preserve and condition the leather.

But be careful! Use only 100% pure neatsfoot oil. There are some "neatsfoot oil" products that are impure, and they actuall will damage the leather. Here's a blurb from Wikipedia, which reiterates the warnings elsewhere:

GOOD -- "Modern neatsfoot oil is still made from cattle-based products, but now, while retaining its historic name, usually is made mostly from lard,[SUP][/SUP] which is sold as pure neatsfoot oil. This formulation does darken leather."

BAAAAD -- "[SUP][/SUP]If mineral oil or other petroleum-based material is added, the product may be called "neatsfoot oil compound." Some brands have also been shown to be adulterated with rapseed oil, soya oil, and other oils.[SUP][/SUP] The addition of mineral oils may lead to more rapid decay of non-synthetic stitching or speed breakdown of the leather itself.