FUN FOR ALL AGES AND ADJUSTABLE - If loose or tight you can adjust them with a screwdriver! You can even take them completely apart to clean them and put them back together. This speed cube bundle set comes with a 3x3 speed cube 2 by 2-speed cube and pyramids speed cube giving 3 different forms of fun. Old and young, beginner and professional this cube puzzle set makes for a fun cube game. MENTALLY STIMULATING: Our puzzle cubes make for a great brain teaser to keep your mind sharp and engaged whether it is with the speed cube 3x3 or speed cube 2x2. For a different kind of challenge from the standard puzzle cube try the pyraminx speed cube. If you get stuck, use the included solution guides to help you. STICKERLESS AND WILL NOT FADE: The Speed Cubes are made of safe non-toxic material and long-lasting non-fading vivid colors. These stickerless speed cubes; ideal for kids' early cognitive development of all ages 3 to adult puzzle enthusiasts.