material durability use This beautiful Happy Birthday Cake Topper has such an impact on shelves - it's fine line modern design ensures that it's suitable for every birthday cake. Made from a very durable 3mm mirrored acrylic with a sturdy 9cm tall stick it is very unlikely to break in transit. We have sold over 8,000 products and have over 600 5* reviews on Etsy for both our products and our customer service.