Made from natural materials these Phatt Hashtag blocks can stack and balance on top of one another or interlock for endless open ended building and construction play. Set of 4 pieces. The Phatt Hashtag blocks are a perfect match and work well with the Phatt plus blocks. When put together the hashtags create the perfect space for the Phatt Lucites to fit. These hashtags are a chunkier version of the papoose hashtags suitable for junior construction enthusiasts.