Amzer Silicone Skin Jelly Case for Motorola THEORY - 1 Pack - Frustration-Free Packaging - Purple Fashionable & flexible Amzer Jelly Case for your Motorola THEORY! The Amzer Jelly Cases are made from durable premium silicone. Its special anti-dust and scratch-free properties, preserves your phones shining look. Helps to prevent your device from sliding on soft surfaces or angle surfaces. Quality material used for this skin provides shield and avoid scratches.