Kids love surprise presents. So it’s fitting that last year’s holiday toy craze was an egg that hatched a mysterious creature known as a Hatchimal, and the followup this season is the Hatchimals Surprise, with not one but two creatures inside. It should also come as no surprise, then, that the 2017 holiday shopping season has an early hit in the form of L.O.L. Surprise!, another “blind pack” toy with a huge online following and (sorry, parents) a tendency to sell out as soon as they hit store shelves. The big appeal of L.O.L. Surprise is that you don’t know what you’re getting until you unwrap the package. Each is sold as a ball with mysterious items inside, including collectible dolls. Each doll comes wrapped in seven layers of packaging that you peel back bit by bit to reveal her and her collection of tiny accessories—little trinkets like doll clothes, stickers, secret messages, fake tattoos, and charms. The L.O.L. Surprise comes in round packaging that look like a bath bomb, and it even has a line extension called L.O.L. Surprise Fizz that fizz when you drop them in water to get at the little toys inside. The limited-edition L.O.L. Surprise Big Surprise, which includes 50 surprises in a glittery gold ball, debuted just over a month ago and sold out pretty much immediately. The L.O.L. “Big Surprise” includes 50 surprises in a glittery gold ball. Those trinkets are packed into a series of aller balls that have to be popped open, unwrapped and/or dropped in water to reveal the surprises inside. It’s out of stock at toy, Target and Walmart, although you can find third-party resellers hawking them — for well over.