Leather | Use a soft-bristled brush or cotton cloth to wipe away dirt. If that's not enough, apply a leather cleaner, such as Skidmore’s Leather Cream. Start with less and add a little at a time if more is necessary. Lightly brush in circular motions paying even attention to the leather and not over-saturating.
For weather protection, use waterproofing spray, cream or wax, such as Kiwi Waterproofing Spray. Make sure to follow the directions listed on the product packaging, such as keeping a certain distance while spraying the leather.