New England Patriots tight end Rob Gronkowski held a press conference at Walpole’s Stop & Shop Tuesday to announce a portion of the proceeds from his new cereal, “Gronk Flakes,” will benefit the Gronk Nation Youth Foundation.

The frosted corn flakes are being sold for $3.99 a box. You can also order them online in a two-pack for $10. Some of the proceeds will benefit the Gronk Nation Youth Foundation, which helps youth charities.

The "limited-edition" cereal is being marketed by PLB Sports, which also came up with "Flutie Flakes," named after former New England Patriots' quarterback Doug Flutie.

More than 64,000 boxes of Gronk Flakes are on sale now at New England-area Stop & Shop stores, including the Foxborough location of Route 140 Main Street.