300-Piece Calm Puzzle for Relaxation Foggy Mountains Spin Master has partnered with the #1 sleep and meditation app, Calm, to bring you Calm Puzzles. Enjoy assembling these mindful puzzles while listening to peaceful audio content, allowing you to lower stress and improve your mood. Each puzzle features a zen landscape with vibrant colors and are crafted from high-quality grayboard with a matte finish that cuts down on glare to provide a picture-perfect finish. Our specially designed puzzles ensure every piece is different and fit tightly with a satisfying snap. These puzzles are designed to be completed in about 2-3 hours, but you can go at whatever pace and take as many sessions as you like. That's the beauty of puzzles; they are always there for you whenever the mood strikes. Comes with a free 30-day subscription to the Calm app.