The VDiff site contains links to affiliate retailers' sites. We will only ever link to products we have used and love – this is the gear that's dangling from our racks. If you purchase from these sites (regardless of if it is the product we linked to or another), VDiff will receive a small percentage of the profit from the store as commission, but this doesn't increase the cost to you. We love providing the climbing community with free, fun information, but can't keep doing it without an income. We'd appreciate you following these links to buy your gear rather than going straight to the site.