Compatible with Lego Advent Calendar 2025 2-in-1 Christmas tree building blocks – 1.Open numbered small boxes daily to build 1 Christmas decoration (24 styles total). 2.Mix all bricks to assemble a large Christmas tree. Combines countdown fun and decorative function.​ 24-Day Surprise Countdown 24 individual packages contain 24 buildable small models with vivid Christmas elements. Small models can be disassembled and reassembled into a large Christmas tree, unlocking daily surprises, suitable for teens and more.​ Premium Material & User-Friendly Design Made of safe ABS material (odorless, no sharp edges) with easy-to-connect bricks. Includes an exquisite gift box and reusable numbered small boxes;Large-sized bricks are kid-friendly for assembly, with assembly instructions included.​ Family Christmas Interactive Item Ideal for family participation – works as a parent-child game to develop creativity, or team up with family/friends to build the large Christmas tree together, enriching holiday gathering moments.​ Ideal Christmas Gift for All Ages Elegant packaging fits kids (8+), teens and adults. Serves as a Christmas toy, countdown calendar, and home decoration, adding warmth to the holiday.​ Merry Christmas, My Friend