Taco Bell is launching a series of giveaways, freebies and special deals, including the Stanley x Bajaversary tumbler, on Tuesday in honor of the popular soda's 20th anniversary.

Here's what you need to know to snag the exclusive merch and other deals available for the anniversary celebration.

The tumblers are only available to the first 100 rewards program members to claim the offer.

 When will Taco Bell's Baja Blast cups be available?

While the Stanley x Bajaversary tumbler seems to be the biggest deal that app members can snag, there are several other offers available.

Baja Blast gelato will be available exclusively to rewards members starting Sept. 3 only on the app at participating locations.

 Taco Bell reward members can monitor the app's Tuesday Drops section for a chance to win the Stanley Cup, which starts on Tuesday, Aug. 13, at 2 p.m. Arizona time.

 The first 100 rewards program members to claim the offer will receive a Stanley x Bajaversary tumbler.

 The first 20 rewards members to redeem the tumblers on the day of the drop will also receive "Free Baja Blast for a Year," presented in the form of a $200 Taco Bell gift card.

Other offers include the $1 happier hour, where customers can get a $1 medium-size Baja Blast fountain drink or regular-size Baja Blast Freeze daily from 2–5 p.m. local time, according to the promo.