Backpack Buddies: Sweetheart are scented stuffed plush that come attached with a keychain. There are 3 different characters all with their own unique scent. Each Backpack Buddy is filled with super soft stuffing and gourmet scented beads. Each Backpack Buddy is 3 inches tall. Scent is guaranteed to last for 2 years. 3 unique Sweetheart Backpack Buddies.