Trader Joe’s fans are in for a surprise because the grocer is about to drop a new range of tote bags as part of a mystery pack.

Beginning in early November, the grocery store, known for its viral merchandise , is launching a range of secret limited-edition designs.

This year's variety includes two new, never-before-seen bags, according to USA Today . Each mystery bundle comes in a brown paper bag, containing three six-gallon reusable bags with the limited-edition designs for $2.99.

Part of the fun is that customers don't know which bags they've bought until they open the paper packaging.

The exclusive bag designs will not be available individually.…