Dr. Petit Silma 2-Box Set [Product] Dr. Petit Silma DX5.5 As seen on TV, just stick it on for stiffness in the neck, shoulders, lower back, elbows, and knees! Reusable and economical. Petit Silma's granules are 99.999% germanium, and unlike magnetism, they have a semi-permanent effect. You can use it continuously by simply replacing the adhesive stickers (replacement plasters) that you stick on your body. Shipped via Yu-Packet Post.