The best part of this is how each tray stacks on top of the one below it, and it easily tracks with each tray so you don’t have space in between. this makes it the perfect storage system. The Box4Blox easy to use and functional for kids of all ages. Simply made from safe, high-quality ABS plastic, which, by the way, is what Legos are made out of, the BOX4BLOX will stand the test of time. Box4Blox is so sure of the quality of this product that they promise to replace any damaged and broken parts for 5 years after purchase One of the amazing things with this was that it holds about 1800 building blocks, that is a lot of buildings that can happen with those blocks. I know that it does not take long to gather that many for your many projects, I know for us just starting the journey yet again, it wont be long before I will need to have a second Box4Blox. This holds the classic size Legos and compatible blocks, it won’t work with the bigger toddler or baby blocks. It was fun for D to put her blocks in and then have them in individual trays to use while she was playing with them, we could put out all of the trays in her play area and let her pick what she wanted. I think if you are giving a gift of Legos, you should include one of these to store them in for the recipient, they will thank you for it! You can purchase these on their website or on Amazon, and they are also going to be including one for giveaway in our Swinging into Summer Blog Hop Giveaway, coming June 1st.