When you buy a new yeti mug, rambler, etc. There is a small card inside and it gives you instructions on how you can register it.

Now I am not sure if they do anything with if you lose or get your yet stolen but it does give you some discounts and keeps you in the know. You get a small free gift, I got a good size sticker pack. All you do is logon to Yeti's website and fill out the info. I did notice they are running out on the pink yeti line and the teal is super popular.

They keep you in the know on any advancements or upgrades in products as well. Being on the water I see so much Yeti gear and barely anyone registers them. If it gets you any perk it is worth it right?