The Secret Box Double Happiness by Philos is a clever wooden puzzle box, perfect for those who love brainteasers. The objective is to uncover the hidden mechanism to open the box. Made from high-quality plywood, it also doubles as a secret compartment for small valuables or a creative way to package a gift. With a moderate difficulty level, it is suitable for children aged 6 and up, as well as adults, offering a fun and intriguing challenge.