Here's what other sites are saying:
Nikwax Leather Restorer is a water based waterproofing conditioner for all waterproof leather clothing, equipment and accessories. It adds water repellency, revives breathability and conditions full-grain leather- specifically designed and optimized for breathable waterproof smooth leather gear.
- Mountain Gear
A spray-on waterproofing for leather clothing and accessories, the Nikwax Leather Restorer (10 fl oz.) adds water repellency, revives breathability and conditions leather.
- Altrec Outdoors
Nikwax Leather Cleaner
Nikwax Conditioner for Leather
Nikwax Fabric & Leather Proof
$6 - $10
Nikwax Nubuck & Suede Proof
$9 - $10
Gear Aid ReviveX Leather Gel Water Repellent & Conditioner