Before you get swept up by the Prime Day shopping fever, we have an interesting deal that will save you a lot of money. There’s just one tiny catch, the deal is aimed at those who already own an Apple Watch, regardless of the model.

Walmart offers 50% discounts on the Apple Watch Sport Band and Sport Loop, but color availability is a bit limited. Apparently, the retailer is running out of these Apple Watch bands, so you should definitely hurry if you want to benefit from the massive discount.

Both Apple Watch bands are now available for purchase for just $25, but you only have two color options for both models. Keep in mind that the Sport Band and Sport Loop will only work on the larger Apple Watches, either 44mm Series 4 or 42mm earlier models.

As far as the bands go, the Apple Watch Sport Loop features a hook-and-loop fastener for quick and easy adjustment. Also, the double-layer nylon weave with dense loops on the skin side should offer cushioning while allowing moisture to escape.

On the other hand, the Apple Watch Sport Band is made from fluoroelastomer, which makes it durable and strong, but soft at the same time as well. You can find both Apple Watch bands at the links below if they haven’t yet run out of stock.