Confusion Inspired by Tetris the game, we created this geometric masterpiece, consisting of two plexiglass parts.  Brain imaging shows playing Tetris leads to a thicker cortex and may also increase brain efficiency, according to a new study. Choose to wear it in summer and let it make your energy.  Information Handmade plexiglass earrings Hypoallergenic stainless steel stud (nickel free) Dimensions: 4,1x7,9 cm Weight: 12 gr  Care The use of alcohol is prohibited, such as ethanol, perfume, baby wipes, etc. Clean them with a cloth!